diff --git a/api/src/runtime/info_event.rs b/api/src/runtime/global_info_event.rs
similarity index 93%
rename from api/src/runtime/info_event.rs
rename to api/src/runtime/global_info_event.rs
index 3bb8c9703..1dd1c2937 100644
--- a/api/src/runtime/info_event.rs
+++ b/api/src/runtime/global_info_event.rs
@@ -2,7 +2,7 @@ use serde::{Deserialize, Serialize};
 
 #[derive(Clone, Eq, PartialEq, Debug, Serialize, Deserialize)]
 #[serde(tag = "kind")]
-pub enum InfoEvent {
+pub enum GlobalInfoEvent {
     AutoAddedController(AutoAddedControllerEvent),
     PlaytimeActivationSucceeded,
     PlaytimeActivationFailed,
diff --git a/api/src/runtime/instance_info_event.rs b/api/src/runtime/instance_info_event.rs
new file mode 100644
index 000000000..9e6ce31a2
--- /dev/null
+++ b/api/src/runtime/instance_info_event.rs
@@ -0,0 +1,10 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Eq, PartialEq, Debug, Serialize, Deserialize)]
+#[serde(tag = "kind")]
+pub enum InstanceInfoEvent {
+    /// If attempting to MIDI-learn but the track is either not armed or the input monitoring mode
+    /// is not suitable.
+    MidiLearnFromFxInputButTrackNotArmed,
+    MidiLearnFromFxInputButTrackHasAudioInput,
+}
diff --git a/api/src/runtime/mod.rs b/api/src/runtime/mod.rs
index ee990188e..ddf4288eb 100644
--- a/api/src/runtime/mod.rs
+++ b/api/src/runtime/mod.rs
@@ -1,8 +1,11 @@
 mod preset;
 pub use preset::*;
 
-mod info_event;
-pub use info_event::*;
+mod global_info_event;
+pub use global_info_event::*;
+
+mod instance_info_event;
+pub use instance_info_event::*;
 
 mod reaper;
 pub use reaper::*;
diff --git a/main/src/application/unit_model.rs b/main/src/application/unit_model.rs
index 363df75c2..0fd446fd2 100644
--- a/main/src/application/unit_model.rs
+++ b/main/src/application/unit_model.rs
@@ -13,11 +13,11 @@ use crate::domain::{
     CompartmentSettings, CompoundMappingSource, ControlContext, ControlInput, DomainEvent,
     DomainEventHandler, ExtendedProcessorContext, FeedbackAudioHookTask, FeedbackOutput,
     FeedbackRealTimeTask, FinalSourceFeedbackValue, GroupId, GroupKey, IncomingCompoundSourceValue,
-    InfoEvent, InputDescriptor, InstanceId, LastTouchedTargetFilter, MainMapping, MappingId,
-    MappingKey, MappingMatchedEvent, MessageCaptureEvent, MidiControlInput, NormalMainTask,
-    OscFeedbackTask, ParamSetting, PluginParams, ProcessorContext, ProjectionFeedbackValue,
-    QualifiedMappingId, RealearnControlSurfaceMainTask, RealearnTarget, ReaperTarget,
-    ReaperTargetType, SharedInstance, SharedUnit, SourceFeedbackEvent,
+    InputDescriptor, InstanceId, InternalInfoEvent, LastTouchedTargetFilter, MainMapping,
+    MappingId, MappingKey, MappingMatchedEvent, MessageCaptureEvent, MidiControlInput,
+    NormalMainTask, OscFeedbackTask, ParamSetting, PluginParams, ProcessorContext,
+    ProjectionFeedbackValue, QualifiedMappingId, RealearnControlSurfaceMainTask, RealearnTarget,
+    ReaperTarget, ReaperTargetType, SharedInstance, SharedUnit, SourceFeedbackEvent,
     StayActiveWhenProjectInBackground, Tag, TargetControlEvent, TargetTouchEvent,
     TargetValueChangedEvent, Unit, UnitContainer, UnitId, VirtualControlElementId, VirtualFx,
     VirtualSource, VirtualSourceValue, LUA_MIDI_SCRIPT_SOURCE_RUNTIME_NAME,
@@ -26,7 +26,7 @@ use base::{Global, NamedChannelSender, SenderToNormalThread, SenderToRealTimeThr
 use derivative::Derivative;
 use enum_map::EnumMap;
 
-use reaper_high::Reaper;
+use reaper_high::{Reaper, Track};
 use rx_util::Notifier;
 use rxrust::prelude::*;
 use slog::{debug, trace};
@@ -41,7 +41,8 @@ use itertools::Itertools;
 use realearn_api::persistence::{
     FxDescriptor, MappingModification, TargetTouchCause, TrackDescriptor,
 };
-use reaper_medium::RecordingInput;
+use realearn_api::runtime::{GlobalInfoEvent, InstanceInfoEvent};
+use reaper_medium::{InputMonitoringMode, RecordingInput};
 use std::error::Error;
 use std::fmt;
 use std::rc::{Rc, Weak};
@@ -58,7 +59,8 @@ pub trait SessionUi {
     fn mapping_matched(&self, event: MappingMatchedEvent);
     fn handle_target_control(&self, event: TargetControlEvent);
     fn handle_source_feedback(&self, event: SourceFeedbackEvent);
-    fn handle_info_event(&self, event: &InfoEvent);
+    fn handle_internal_info_event(&self, event: &InternalInfoEvent);
+    fn handle_external_info_event(&self, event: InstanceInfoEvent);
     fn handle_everything_changed(&self, unit_model: &UnitModel);
     fn handle_unit_name_changed(&self);
     fn handle_global_control_and_feedback_state_changed(&self);
@@ -1741,6 +1743,25 @@ impl UnitModel {
         reenable_control_after_touched: bool,
         ignore_sources: Vec<CompoundMappingSource>,
     ) -> Result<(), &'static str> {
+        // Warn if settings are not good
+        if self.control_input.get().is_midi_fx_input() {
+            if let Some(track) = self.processor_context.track() {
+                if !track
+                    .recording_input()
+                    .is_some_and(|i| matches!(i, RecordingInput::Midi { .. }))
+                {
+                    self.ui().handle_external_info_event(
+                        InstanceInfoEvent::MidiLearnFromFxInputButTrackHasAudioInput,
+                    );
+                } else if !track.is_armed(false)
+                    || track.input_monitoring_mode() != InputMonitoringMode::Normal
+                {
+                    self.ui().handle_external_info_event(
+                        InstanceInfoEvent::MidiLearnFromFxInputButTrackNotArmed,
+                    );
+                }
+            }
+        }
         let allow_virtual_sources = mapping_id.compartment != CompartmentKind::Controller;
         let osc_arg_index_hint = {
             let mapping = self
@@ -2695,7 +2716,7 @@ impl DomainEventHandler for WeakUnitModel {
         match event {
             Info(evt) => {
                 let s = session.try_borrow()?;
-                s.ui().handle_info_event(evt);
+                s.ui().handle_internal_info_event(evt);
             }
             ConditionsChanged => {
                 let s = session.try_borrow()?;
diff --git a/main/src/domain/control_surface.rs b/main/src/domain/control_surface.rs
index 78788dd86..94c551948 100644
--- a/main/src/domain/control_surface.rs
+++ b/main/src/domain/control_surface.rs
@@ -264,7 +264,7 @@ impl<EH: DomainEventHandler> RealearnControlSurfaceMiddleware<EH> {
                 helgoboss_allocator::undesired_allocation_count();
             if current_undesired_allocation_count != self.last_undesired_allocation_count {
                 self.last_undesired_allocation_count = current_undesired_allocation_count;
-                let event = &crate::domain::InfoEvent::UndesiredAllocationCountChanged;
+                let event = &crate::domain::InternalInfoEvent::UndesiredAllocationCountChanged;
                 for p in self.main_processors.borrow_mut().iter_mut() {
                     p.process_info_event(event);
                 }
diff --git a/main/src/domain/eventing.rs b/main/src/domain/eventing.rs
index 20f0df8fb..379a3114d 100644
--- a/main/src/domain/eventing.rs
+++ b/main/src/domain/eventing.rs
@@ -1,6 +1,6 @@
 use crate::domain::{
     CompartmentKind, CompoundMappingTarget, ControlLogContext, ControlLogEntry, FeedbackLogEntry,
-    InfoEvent, MappingId, MessageCaptureResult, PluginParamIndex, PluginParams,
+    InternalInfoEvent, MappingId, MessageCaptureResult, PluginParamIndex, PluginParams,
     ProjectionFeedbackValue, QualifiedMappingId, RawParamValue,
 };
 use base::hash_util::NonCryptoHashSet;
@@ -22,7 +22,7 @@ pub enum DomainEvent<'a> {
     },
     UpdatedAllParameters(PluginParams),
     TargetValueChanged(TargetValueChangedEvent<'a>),
-    Info(&'a InfoEvent),
+    Info(&'a InternalInfoEvent),
     ProjectionFeedback(ProjectionFeedbackValue),
     MappingMatched(MappingMatchedEvent),
     HandleTargetControl(TargetControlEvent),
diff --git a/main/src/domain/info_event.rs b/main/src/domain/internal_info_event.rs
similarity index 65%
rename from main/src/domain/info_event.rs
rename to main/src/domain/internal_info_event.rs
index 849cc8357..bea7b5da0 100644
--- a/main/src/domain/info_event.rs
+++ b/main/src/domain/internal_info_event.rs
@@ -1,4 +1,4 @@
 #[derive(Debug)]
-pub enum InfoEvent {
+pub enum InternalInfoEvent {
     UndesiredAllocationCountChanged,
 }
diff --git a/main/src/domain/io.rs b/main/src/domain/io.rs
index b637c9039..5ff604cf6 100644
--- a/main/src/domain/io.rs
+++ b/main/src/domain/io.rs
@@ -36,6 +36,10 @@ impl ControlInput {
     pub fn is_midi_device(self) -> bool {
         matches!(self, ControlInput::Midi(MidiControlInput::Device(_)))
     }
+
+    pub fn is_midi_fx_input(self) -> bool {
+        matches!(self, ControlInput::Midi(MidiControlInput::FxInput))
+    }
 }
 
 impl Default for ControlInput {
diff --git a/main/src/domain/main_processor.rs b/main/src/domain/main_processor.rs
index 0547981f0..e98fd31cc 100644
--- a/main/src/domain/main_processor.rs
+++ b/main/src/domain/main_processor.rs
@@ -9,7 +9,7 @@ use crate::domain::{
     FeedbackLogEntry, FeedbackOutput, FeedbackRealTimeTask, FeedbackResolution,
     FeedbackSendBehavior, FinalRealFeedbackValue, FinalSourceFeedbackValue,
     GlobalControlAndFeedbackState, GroupId, HitInstructionContext, HitInstructionResponse,
-    InfoEvent, InstanceId, IoUpdatedEvent, KeyMessage, MainMapping, MainSourceMessage,
+    InstanceId, InternalInfoEvent, IoUpdatedEvent, KeyMessage, MainMapping, MainSourceMessage,
     MappingActivationEffect, MappingControlResult, MappingId, MappingInfo, MessageCaptureEvent,
     MessageCaptureResult, MidiControlInput, MidiDestination, MidiScanResult, NoopLogger,
     NormalRealTimeTask, OrderedMappingIdSet, OrderedMappingMap, OscDeviceId, OscFeedbackTask,
@@ -1847,7 +1847,7 @@ impl<EH: DomainEventHandler> MainProcessor<EH> {
             && self.basics.settings.control_input == ControlInput::Osc(*device_id)
     }
 
-    pub fn process_info_event(&mut self, evt: &InfoEvent) {
+    pub fn process_info_event(&mut self, evt: &InternalInfoEvent) {
         self.basics
             .event_handler
             .handle_event_ignoring_error(DomainEvent::Info(evt));
diff --git a/main/src/domain/mod.rs b/main/src/domain/mod.rs
index a7d782cf6..ef81636e7 100644
--- a/main/src/domain/mod.rs
+++ b/main/src/domain/mod.rs
@@ -150,8 +150,8 @@ pub use lua_support::*;
 mod lua_module_container;
 pub use lua_module_container::*;
 
-mod info_event;
-pub use info_event::*;
+mod internal_info_event;
+pub use internal_info_event::*;
 
 mod instance;
 pub use instance::*;
diff --git a/main/src/infrastructure/plugin/backbone_shell.rs b/main/src/infrastructure/plugin/backbone_shell.rs
index f6e1ceeae..1d48afbed 100644
--- a/main/src/infrastructure/plugin/backbone_shell.rs
+++ b/main/src/infrastructure/plugin/backbone_shell.rs
@@ -67,7 +67,7 @@ use realearn_api::persistence::{
     FxDescriptor, MidiControllerConnection, MidiInputPort, MidiOutputPort, TargetTouchCause,
     TrackDescriptor, TrackFxChain,
 };
-use realearn_api::runtime::{AutoAddedControllerEvent, InfoEvent};
+use realearn_api::runtime::{AutoAddedControllerEvent, GlobalInfoEvent};
 use reaper_high::{
     ChangeEvent, CrashInfo, Fx, Guid, MiddlewareControlSurface, Project, Reaper, Track,
 };
@@ -2608,9 +2608,9 @@ impl LicenseManagerEventHandler for BackboneLicenseManagerEventHandler {
                 playtime_clip_engine::ClipEngine::get().handle_changed_licenses(source.licenses());
             // Send a notification to the app (if it wants to display "success")
             let info_event = if success {
-                InfoEvent::PlaytimeActivationSucceeded
+                GlobalInfoEvent::PlaytimeActivationSucceeded
             } else {
-                InfoEvent::PlaytimeActivationFailed
+                GlobalInfoEvent::PlaytimeActivationFailed
             };
             shell.proto_hub().notify_about_global_info_event(info_event);
             // Give all Playtime instances a chance to load previously unloaded matrices
@@ -2834,9 +2834,11 @@ async fn maybe_create_controller_for_device(
         .save_controller(controller)?;
     BackboneShell::get()
         .proto_hub()
-        .notify_about_global_info_event(InfoEvent::AutoAddedController(AutoAddedControllerEvent {
-            controller_id: outcome.id,
-        }));
+        .notify_about_global_info_event(GlobalInfoEvent::AutoAddedController(
+            AutoAddedControllerEvent {
+                controller_id: outcome.id,
+            },
+        ));
     Ok(())
 }
 
diff --git a/main/src/infrastructure/plugin/unit_shell.rs b/main/src/infrastructure/plugin/unit_shell.rs
index a6f74251c..7f3782f9f 100644
--- a/main/src/infrastructure/plugin/unit_shell.rs
+++ b/main/src/infrastructure/plugin/unit_shell.rs
@@ -148,7 +148,7 @@ impl UnitShell {
         );
         let shared_unit_model = Rc::new(RefCell::new(unit_model));
         let weak_session = Rc::downgrade(&shared_unit_model);
-        let unit_panel = UnitPanel::new(weak_session.clone(), instance_panel.clone());
+        let unit_panel = UnitPanel::new(instance_id, weak_session.clone(), instance_panel.clone());
         shared_unit_model
             .borrow_mut()
             .set_ui(Rc::downgrade(&unit_panel));
diff --git a/main/src/infrastructure/proto/ext.rs b/main/src/infrastructure/proto/ext.rs
index 61a1e8225..c19bd89ca 100644
--- a/main/src/infrastructure/proto/ext.rs
+++ b/main/src/infrastructure/proto/ext.rs
@@ -30,6 +30,12 @@ use crate::infrastructure::server::data::get_controller_routing;
 use realearn_api::runtime::{ControllerPreset, LicenseInfo, MainPreset, ValidatedLicense};
 
 impl occasional_instance_update::Update {
+    pub fn info_event(event: realearn_api::runtime::InstanceInfoEvent) -> Self {
+        let json =
+            serde_json::to_string(&event).expect("couldn't represent instance info event as JSON");
+        Self::InfoEvent(json)
+    }
+
     pub fn settings(instance_shell: &InstanceShell) -> Self {
         let settings = instance_shell.settings();
         let json =
@@ -66,9 +72,9 @@ impl occasional_global_update::Update {
         Self::ArrangementPlayState(ArrangementPlayState::from_engine(play_state).into())
     }
 
-    pub fn info_event(event: realearn_api::runtime::InfoEvent) -> Self {
+    pub fn info_event(event: realearn_api::runtime::GlobalInfoEvent) -> Self {
         let json =
-            serde_json::to_string(&event).expect("couldn't represent main info event as JSON");
+            serde_json::to_string(&event).expect("couldn't represent global info event as JSON");
         Self::InfoEvent(json)
     }
 
diff --git a/main/src/infrastructure/proto/generated.rs b/main/src/infrastructure/proto/generated.rs
index 00afa3068..642d9f1f7 100644
--- a/main/src/infrastructure/proto/generated.rs
+++ b/main/src/infrastructure/proto/generated.rs
@@ -856,7 +856,7 @@ pub struct GetOccasionalInstanceUpdatesReply {
 #[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct OccasionalInstanceUpdate {
-    #[prost(oneof = "occasional_instance_update::Update", tags = "1, 2, 3")]
+    #[prost(oneof = "occasional_instance_update::Update", tags = "1, 2, 3, 4")]
     pub update: ::core::option::Option<occasional_instance_update::Update>,
 }
 /// Nested message and enum types in `OccasionalInstanceUpdate`.
@@ -873,6 +873,9 @@ pub mod occasional_instance_update {
         /// Everything within the instance has changed (e.g. instance data load).
         #[prost(bool, tag = "3")]
         EverythingHasChanged(bool),
+        /// Info event as JSON.
+        #[prost(string, tag = "4")]
+        InfoEvent(::prost::alloc::string::String),
     }
 }
 #[allow(clippy::derive_partial_eq_without_eq)]
diff --git a/main/src/infrastructure/proto/hub.rs b/main/src/infrastructure/proto/hub.rs
index 88e1d5237..723c3fa6e 100644
--- a/main/src/infrastructure/proto/hub.rs
+++ b/main/src/infrastructure/proto/hub.rs
@@ -11,7 +11,7 @@ use crate::infrastructure::proto::{
     OccasionalInstanceUpdate, OccasionalInstanceUpdateBatch, OccasionalUnitUpdateBatch,
     ProtoRequestHandler, ProtoSenders, QualifiedOccasionalUnitUpdate,
 };
-use realearn_api::runtime::InfoEvent;
+use realearn_api::runtime::{GlobalInfoEvent, InstanceInfoEvent};
 use reaper_high::ChangeEvent;
 
 #[derive(Debug)]
@@ -43,7 +43,17 @@ impl ProtoHub {
         ))
     }
 
-    pub fn notify_about_global_info_event(&self, info_event: InfoEvent) {
+    pub fn notify_about_instance_info_event(
+        &self,
+        instance_id: InstanceId,
+        info_event: InstanceInfoEvent,
+    ) {
+        self.send_occasional_instance_updates(instance_id, || {
+            [occasional_instance_update::Update::info_event(info_event)]
+        });
+    }
+
+    pub fn notify_about_global_info_event(&self, info_event: GlobalInfoEvent) {
         self.send_occasional_global_updates(|| {
             [occasional_global_update::Update::info_event(info_event)]
         });
diff --git a/main/src/infrastructure/ui/unit_panel.rs b/main/src/infrastructure/ui/unit_panel.rs
index 162e62d5b..0810efecc 100644
--- a/main/src/infrastructure/ui/unit_panel.rs
+++ b/main/src/infrastructure/ui/unit_panel.rs
@@ -15,8 +15,9 @@ use crate::application::{
 use crate::base::when;
 use crate::domain::ui_util::format_tags_as_csv;
 use crate::domain::{
-    CompartmentKind, InfoEvent, MappingId, MappingMatchedEvent, ProjectionFeedbackValue,
-    QualifiedMappingId, SourceFeedbackEvent, TargetControlEvent, TargetValueChangedEvent,
+    CompartmentKind, InstanceId, InternalInfoEvent, MappingId, MappingMatchedEvent,
+    ProjectionFeedbackValue, QualifiedMappingId, SourceFeedbackEvent, TargetControlEvent,
+    TargetValueChangedEvent,
 };
 use crate::infrastructure::plugin::{update_auto_units_async, BackboneShell};
 use crate::infrastructure::server::http::{
@@ -27,6 +28,8 @@ use crate::infrastructure::ui::util::{header_panel_height, parse_tags_from_csv};
 use anyhow::Context;
 use base::{Global, SoundPlayer};
 use helgoboss_allocator::undesired_allocation_count;
+use playtime_api::runtime::InfoEvent;
+use realearn_api::runtime::{GlobalInfoEvent, InstanceInfoEvent};
 use rxrust::prelude::*;
 use std::rc::{Rc, Weak};
 use swell_ui::{DialogUnits, Point, SharedView, View, ViewContext, WeakView, Window};
@@ -37,6 +40,7 @@ type _MainPanel = UnitPanel;
 /// The complete ReaLearn panel containing everything.
 #[derive(Debug)]
 pub struct UnitPanel {
+    instance_id: InstanceId,
     view: ViewContext,
     session: WeakUnitModel,
     instance_panel: WeakView<InstancePanel>,
@@ -49,6 +53,7 @@ pub struct UnitPanel {
 
 impl UnitPanel {
     pub fn new(
+        instance_id: InstanceId,
         session: WeakUnitModel,
         instance_panel: WeakView<InstancePanel>,
     ) -> SharedView<Self> {
@@ -56,6 +61,7 @@ impl UnitPanel {
         let panel_manager = Rc::new(RefCell::new(panel_manager));
         let state = SharedMainState::default();
         let main_panel = Self {
+            instance_id,
             view: Default::default(),
             state: state.clone(),
             session: session.clone(),
@@ -309,17 +315,23 @@ impl UnitPanel {
         self.handle_affected_own(affected);
     }
 
-    fn handle_info_event(self: SharedView<Self>, event: &InfoEvent) {
+    fn handle_internal_info_event(self: SharedView<Self>, event: &InternalInfoEvent) {
         if !self.is_open() {
             return;
         }
         match event {
-            InfoEvent::UndesiredAllocationCountChanged => {
+            InternalInfoEvent::UndesiredAllocationCountChanged => {
                 self.invalidate_status_2_text();
             }
         }
     }
 
+    fn handle_external_info_event(self: SharedView<Self>, event: InstanceInfoEvent) {
+        BackboneShell::get()
+            .proto_hub()
+            .notify_about_instance_info_event(self.instance_id, event);
+    }
+
     fn handle_unit_name_changed(&self) {
         if let Ok(shell) = self.instance_panel().shell() {
             // At the time when this method is called, the unit is still borrowed, so the proto hub can't create
@@ -563,8 +575,12 @@ impl SessionUi for Weak<UnitPanel> {
         upgrade_panel(self).handle_affected(affected, initiator);
     }
 
-    fn handle_info_event(&self, event: &InfoEvent) {
-        upgrade_panel(self).handle_info_event(event);
+    fn handle_internal_info_event(&self, event: &InternalInfoEvent) {
+        upgrade_panel(self).handle_internal_info_event(event);
+    }
+
+    fn handle_external_info_event(&self, event: InstanceInfoEvent) {
+        upgrade_panel(self).handle_external_info_event(event);
     }
 
     fn handle_everything_changed(&self, unit_model: &UnitModel) {