diff --git a/platform/src/ActivityManager.js b/platform/src/ActivityManager.js
index 5d0abfe..1b9914a 100644
--- a/platform/src/ActivityManager.js
+++ b/platform/src/ActivityManager.js
@@ -132,7 +132,7 @@ class ActivityManager {
         try {
             let file = this.fileHandler.fetchFile( this.activitiesUrl , urlParamPrivateRepo() );
             fileContent = file.content;
-        } catch (e) {
+        } catch (err) {
             errors.push( new EducationPlatformError(`The activity configuration file was not accessible at: ${this.activitiesUrl}. 
                                                     Check the activity file is available at the given url and you have the correct access rights.`) );
         }
diff --git a/platform/src/EducationPlatformApp.js b/platform/src/EducationPlatformApp.js
index ce5717d..9635d79 100644
--- a/platform/src/EducationPlatformApp.js
+++ b/platform/src/EducationPlatformApp.js
@@ -526,7 +526,11 @@ class EducationPlatformApp {
             } 
         }).catch( (err) => {
             this.errorHandler.notify("There was an error translating action function parameter types.", err);
-        } );
+
+            if (!(err instanceof EducationPlatformError)) {
+                throw err;
+            }
+        });
 
     }
 
@@ -705,8 +709,13 @@ class EducationPlatformApp {
         Promise.all(fileStorePromises).then( () => {
             this.successNotification("The activity panel contents have been saved.");
         
-        }).catch(() => {
-            this.errorHandler.notify("An error occurred while trying to save the panel contents.");
+        }).catch( (err) => {
+            this.errorHandler.notify("An error occurred while trying to save the panel contents.", err);
+
+            if (!(err instanceof EducationPlatformError)) {
+                throw err;
+            }
+            this.errorHandler.notify();
         });
     }
 
diff --git a/platform/src/ErrorHandler.js b/platform/src/ErrorHandler.js
index 7240ba7..ae7b89b 100644
--- a/platform/src/ErrorHandler.js
+++ b/platform/src/ErrorHandler.js
@@ -11,15 +11,18 @@ class ErrorHandler {
 
         this.displayError = notifier;
 
-        window.onerror = () => {
+        window.onerror = (event, source, lineno, colno, err) => {
+            
+            this.notify("An unexpected error has occurred", err);
+
             // TODO log unhandled exceptions/errors to remote server
         };
     }
 
     /**
      * Displays the given error 
-     * @param message - The message to display
-     * @param {EducationPlatformError} error - The error to display
+     * @param message - The message to display if provided
+     * @param {EducationPlatformError} error - The error to display if provided
      */
     notify(message, error){
         let displayMessage = "";
@@ -32,11 +35,16 @@ class ErrorHandler {
             displayMessage += "<br><br>"
         }
 
-        if (error instanceof EducationPlatformError){
-            displayMessage += `<i>${error.message}</i>`;
-        } else {
-            // Other errors mark as unknown
-            displayMessage += `<i>Unknown - ${error.message}</i>`;
+        if (error) {
+            if (error instanceof EducationPlatformError){
+                displayMessage += `<i>${error.message}</i>`;
+            } else if (error instanceof Error){ 
+                // Other errors mark as unknown
+                displayMessage += `<i>${error.constructor.name} - ${error.message}</i>`;
+            } else {
+                // Anything else mark as unknown
+                displayMessage += `<i>value - ${String(error)}</i>`;
+            }
         }
 
         this.displayError(displayMessage);
diff --git a/platform/src/ToolsManager.js b/platform/src/ToolsManager.js
index 6169269..c469d12 100644
--- a/platform/src/ToolsManager.js
+++ b/platform/src/ToolsManager.js
@@ -59,11 +59,13 @@ class ToolManager {
 
             try{
                 xhr.send();
-            } catch (e) {
-                if (e instanceof DOMException){
+            } catch (err) {
+                if (err instanceof DOMException){
                     errors.push( new EducationPlatformError(`A tool configuration file was not accessible at: ${toolUrl.url}. 
                                                             Check the tool's url given in the activity file is correct and the tool 
                                                             service is still available.`) );
+                } else {
+                    throw err;
                 }
             }
 
diff --git a/platform/src/Utility.js b/platform/src/Utility.js
index fa6f574..aa5b19d 100644
--- a/platform/src/Utility.js
+++ b/platform/src/Utility.js
@@ -200,9 +200,11 @@ export function parseConfigFile(contents, extension="yml"){
                 console.log("Cannot parse unsupported configuration file type '" + extension + "'.");
                 configObject = null;
         }
-    } catch(e){
-        if (e instanceof YAMLParseError || e instanceof SyntaxError){
-            configObject = e;
+    } catch(err){
+        if (err instanceof YAMLParseError || err instanceof SyntaxError){
+            configObject = err;
+        } else {
+            throw err;
         }
     }
 
diff --git a/platform/test/spec/testEducationPlatformAppSpec.js b/platform/test/spec/testEducationPlatformAppSpec.js
index e9aac54..56f534e 100644
--- a/platform/test/spec/testEducationPlatformAppSpec.js
+++ b/platform/test/spec/testEducationPlatformAppSpec.js
@@ -140,6 +140,9 @@ describe("EducationPlatformApp", () => {
                 reject(new TypeError("test type error"));
             })
 
+            window.onerror = () => {}; /* Disable notifications for unknown errors so that the uncaught exceptions 
+                                          that this test triggers do not cause random failures */
+
             // Call the target object
             platform.handleResponseActionFunction({}, invokeReturnedPromiseError);