diff --git a/changes.txt b/changes.txt
index 2662f104..c343fa79 100644
--- a/changes.txt
+++ b/changes.txt
@@ -1,5 +1,5 @@
-0.2.4
-- Added String field in values panel (issue #8)
+0.2.4 (2021-04-11)
+- Added string field in values panel (issue #8)
 - Fixed 2021.1: Can't close any tabs once a binary file is opened (issue #35)
 
 0.2.3 (2020-07-30)
diff --git a/lib/bined-core-0.2.0-SNAPSHOT.jar b/lib/bined-core-0.2.0-SNAPSHOT.jar
index 5c13b922..b9a6cb63 100644
Binary files a/lib/bined-core-0.2.0-SNAPSHOT.jar and b/lib/bined-core-0.2.0-SNAPSHOT.jar differ
diff --git a/lib/bined-extended-0.2.0-SNAPSHOT.jar b/lib/bined-extended-0.2.0-SNAPSHOT.jar
index 455f3562..d0b73351 100644
Binary files a/lib/bined-extended-0.2.0-SNAPSHOT.jar and b/lib/bined-extended-0.2.0-SNAPSHOT.jar differ
diff --git a/lib/bined-highlight-swing-0.2.0-SNAPSHOT.jar b/lib/bined-highlight-swing-0.2.0-SNAPSHOT.jar
index b8bc267e..3981b73f 100644
Binary files a/lib/bined-highlight-swing-0.2.0-SNAPSHOT.jar and b/lib/bined-highlight-swing-0.2.0-SNAPSHOT.jar differ
diff --git a/lib/bined-operation-0.2.0-SNAPSHOT.jar b/lib/bined-operation-0.2.0-SNAPSHOT.jar
index ca0091e9..ae904033 100644
Binary files a/lib/bined-operation-0.2.0-SNAPSHOT.jar and b/lib/bined-operation-0.2.0-SNAPSHOT.jar differ
diff --git a/lib/bined-operation-swing-0.2.0-SNAPSHOT.jar b/lib/bined-operation-swing-0.2.0-SNAPSHOT.jar
index 89f6795b..d5217795 100644
Binary files a/lib/bined-operation-swing-0.2.0-SNAPSHOT.jar and b/lib/bined-operation-swing-0.2.0-SNAPSHOT.jar differ
diff --git a/lib/bined-swing-0.2.0-SNAPSHOT.jar b/lib/bined-swing-0.2.0-SNAPSHOT.jar
index eea497a4..909c4bdf 100644
Binary files a/lib/bined-swing-0.2.0-SNAPSHOT.jar and b/lib/bined-swing-0.2.0-SNAPSHOT.jar differ
diff --git a/lib/bined-swing-extended-0.2.0-SNAPSHOT.jar b/lib/bined-swing-extended-0.2.0-SNAPSHOT.jar
index 43aceab9..23434aa4 100644
Binary files a/lib/bined-swing-extended-0.2.0-SNAPSHOT.jar and b/lib/bined-swing-extended-0.2.0-SNAPSHOT.jar differ
diff --git a/resources/META-INF/plugin.xml b/resources/META-INF/plugin.xml
index c89edc35..6137172f 100644
--- a/resources/META-INF/plugin.xml
+++ b/resources/META-INF/plugin.xml
@@ -1,7 +1,7 @@
 <idea-plugin version="2" url="https://bined.exbin.org/intellij-plugin">
     <id>org.exbin.deltahex.intellij</id>
     <name>BinEd - Binary/Hexadecimal Editor</name>
-    <version>0.2.4.snapshot</version>
+    <version>0.2.4</version>
     <vendor email="exbinproject@gmail.com" url="https://exbin.org">ExBin Project</vendor>
 
     <description><![CDATA[
@@ -11,7 +11,7 @@
 <li>Associate file extension with Binary File file type in Options/Editor/File Types</li></ul>
 
 <h1>Preview</h1>
-<p><img src="https://bined.exbin.org/images/bined-intellij-plugin-preview-0.2.3.png" alt="[bined-intellij-plugin-preview]" width="382" height="65"/></p>
+<p><img src="https://bined.exbin.org/images/bined-intellij-plugin-preview-0.2.4.png" alt="[bined-intellij-plugin-preview]" width="382" height="65"/></p>
 
 <h1>Features</h1>
 <ul><li>Visualize data as numerical (hexadecimal) codes and text representation</li>
@@ -32,7 +32,7 @@ Sources: <a href="https://github.com/exbin/bined-intellij-plugin">https://github
     ]]></description>
 
     <change-notes><![CDATA[
-<ul><li>Added String field in values panel</li>
+<ul><li>Added string field in values panel</li>
 <li>Fixed Can't close any tabs once a binary file is opened</li>
 </ul>
     ]]>
@@ -51,7 +51,7 @@ Sources: <a href="https://github.com/exbin/bined-intellij-plugin">https://github
     <depends optional="true" config-file="go-ext.xml">com.intellij.modules.go</depends>
     <depends optional="true" config-file="ruby-ext.xml">com.intellij.modules.ruby</depends>
     <depends optional="true" config-file="c-ext.xml">com.intellij.modules.clion</depends>
-    <depends optional="true" config-file="database-ext.xml">com.intellij.modules.database</depends>
+<!--    <depends optional="true" config-file="database-ext.xml">com.intellij.modules.database</depends> -->
 
     <project-components>
     </project-components>
diff --git a/resources/org/exbin/bined/intellij/resources/Bundle.properties b/resources/org/exbin/bined/intellij/resources/Bundle.properties
index 86efa55d..8e36c2ac 100644
--- a/resources/org/exbin/bined/intellij/resources/Bundle.properties
+++ b/resources/org/exbin/bined/intellij/resources/Bundle.properties
@@ -1,9 +1,9 @@
 Application.name = BinEd
 Application.title = BinEd Binary/Hexadecimal Editor
 Application.release = 0.2.4
-Application.mode = DEV
-Application.version = 0.2.4 DEV
-Application.product= BinEd Binary/Hexadecimal Editor 0.2.4 DEV
+Application.mode =
+Application.version = 0.2.4
+Application.product= BinEd Binary/Hexadecimal Editor 0.2.4
 Application.vendor = ExBin Project
 Application.homepage = https://bined.exbin.org/intellij-plugin/
 Application.vendorId = ExBin Project
diff --git a/src/org/exbin/bined/intellij/BinEdFileEditor.java b/src/org/exbin/bined/intellij/BinEdFileEditor.java
index 8d9a2047..039a3524 100644
--- a/src/org/exbin/bined/intellij/BinEdFileEditor.java
+++ b/src/org/exbin/bined/intellij/BinEdFileEditor.java
@@ -23,6 +23,7 @@
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.Key;
 import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.openapi.vfs.VirtualFileSystem;
 import com.intellij.util.messages.MessageBus;
 import com.intellij.util.messages.MessageBusConnection;
 
@@ -32,12 +33,15 @@
 import javax.swing.*;
 import java.beans.PropertyChangeListener;
 import java.beans.PropertyChangeSupport;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
 
 /**
  * File editor using BinEd editor component.
  *
  * @author ExBin Project (http://exbin.org)
- * @version 0.2.4 2021/04/10
+ * @version 0.2.4 2021/04/11
  */
 @ParametersAreNonnullByDefault
 public class BinEdFileEditor implements FileEditor, DumbAware {
@@ -48,6 +52,7 @@ public class BinEdFileEditor implements FileEditor, DumbAware {
     private String displayName;
     private BinEdVirtualFile virtualFile;
     private BinEdFileEditorState fileEditorState = new BinEdFileEditorState();
+    private static VirtualFile NULL_VIRTUAL_FILE = new NullVirtualFile();
 
     public BinEdFileEditor(Project project, final BinEdVirtualFile virtualFile) {
         this.project = project;
@@ -135,12 +140,12 @@ public String getName() {
 
     @Nonnull
     @Override
-    public FileEditorState getState(@Nonnull FileEditorStateLevel level) {
+    public FileEditorState getState(FileEditorStateLevel level) {
         return fileEditorState;
     }
 
     @Override
-    public void setState(@Nonnull FileEditorState state) {
+    public void setState(FileEditorState state) {
     }
 
     @Override
@@ -164,12 +169,12 @@ public void deselectNotify() {
     }
 
     @Override
-    public void addPropertyChangeListener(@Nonnull PropertyChangeListener listener) {
+    public void addPropertyChangeListener(PropertyChangeListener listener) {
         propertyChangeSupport.addPropertyChangeListener(listener);
     }
 
     @Override
-    public void removePropertyChangeListener(@Nonnull PropertyChangeListener listener) {
+    public void removePropertyChangeListener(PropertyChangeListener listener) {
         propertyChangeSupport.removePropertyChangeListener(listener);
     }
 
@@ -192,12 +197,12 @@ public void dispose() {
 
     @Nullable
     @Override
-    public <T> T getUserData(@Nonnull Key<T> key) {
+    public <T> T getUserData(Key<T> key) {
         return null;
     }
 
     @Override
-    public <T> void putUserData(@Nonnull Key<T> key, @Nullable T value) {
+    public <T> void putUserData(Key<T> key, @Nullable T value) {
     }
 
     public void setDisplayName(String displayName) {
@@ -209,10 +214,93 @@ public BinEdVirtualFile getVirtualFile() {
         return virtualFile;
     }
 
+    @Nonnull
     @Override
-    public VirtualFile getFile() { return virtualFile; }
+    public VirtualFile getFile() {
+        return NULL_VIRTUAL_FILE;
+    }
 
+    @Nonnull
     public Project getProject() {
         return project;
     }
+
+    @ParametersAreNonnullByDefault
+    private static class NullVirtualFile extends VirtualFile {
+        @Nonnull
+        @Override
+        public String getName() {
+            return "NULL";
+        }
+
+        @Nonnull
+        @Override
+        public VirtualFileSystem getFileSystem() {
+            return new BinEdFileSystem();
+        }
+
+        @Nonnull
+        @Override
+        public String getPath() {
+            return "";
+        }
+
+        @Override
+        public boolean isWritable() {
+            return false;
+        }
+
+        @Override
+        public boolean isDirectory() {
+            return false;
+        }
+
+        @Override
+        public boolean isValid() {
+            return true;
+        }
+
+        @Nullable
+        @Override
+        public VirtualFile getParent() {
+            return null;
+        }
+
+        @Nonnull
+        @Override
+        public VirtualFile[] getChildren() {
+            return new VirtualFile[0];
+        }
+
+        @Nonnull
+        @Override
+        public OutputStream getOutputStream(Object requestor, long newModificationStamp, long newTimeStamp) throws IOException {
+            throw new UnsupportedOperationException();
+        }
+
+        @Nonnull
+        @Override
+        public byte[] contentsToByteArray() throws IOException {
+            return new byte[0];
+        }
+
+        @Override
+        public long getTimeStamp() {
+            return 0;
+        }
+
+        @Override
+        public long getLength() {
+            return 0;
+        }
+
+        @Override
+        public void refresh(boolean asynchronous, boolean recursive, @Nullable Runnable postRunnable) {
+        }
+
+        @Override
+        public InputStream getInputStream() throws IOException {
+            throw new UnsupportedOperationException();
+        }
+    }
 }
diff --git a/src/org/exbin/bined/intellij/BinEdNativeFileEditor.java b/src/org/exbin/bined/intellij/BinEdNativeFileEditor.java
index 6f2b7dda..e144900c 100644
--- a/src/org/exbin/bined/intellij/BinEdNativeFileEditor.java
+++ b/src/org/exbin/bined/intellij/BinEdNativeFileEditor.java
@@ -36,7 +36,7 @@
  * Native file editor using BinEd editor component.
  *
  * @author ExBin Project (http://exbin.org)
- * @version 0.2.2 2020/07/29
+ * @version 0.2.4 2021/04/11
  */
 @ParametersAreNonnullByDefault
 public class BinEdNativeFileEditor implements FileEditor, DumbAware {
@@ -75,12 +75,12 @@ public String getName() {
 
     @Nonnull
     @Override
-    public FileEditorState getState(@Nonnull FileEditorStateLevel level) {
+    public FileEditorState getState(FileEditorStateLevel level) {
         return fileEditorState;
     }
 
     @Override
-    public void setState(@Nonnull FileEditorState state) {
+    public void setState(FileEditorState state) {
     }
 
     @Override
@@ -104,12 +104,12 @@ public void deselectNotify() {
     }
 
     @Override
-    public void addPropertyChangeListener(@Nonnull PropertyChangeListener listener) {
+    public void addPropertyChangeListener(PropertyChangeListener listener) {
         propertyChangeSupport.addPropertyChangeListener(listener);
     }
 
     @Override
-    public void removePropertyChangeListener(@Nonnull PropertyChangeListener listener) {
+    public void removePropertyChangeListener(PropertyChangeListener listener) {
         propertyChangeSupport.removePropertyChangeListener(listener);
     }
 
@@ -132,25 +132,30 @@ public void dispose() {
 
     @Nullable
     @Override
-    public <T> T getUserData(@Nonnull Key<T> key) {
+    public <T> T getUserData(Key<T> key) {
         return null;
     }
 
     @Override
-    public <T> void putUserData(@Nonnull Key<T> key, @Nullable T value) {
+    public <T> void putUserData(Key<T> key, @Nullable T value) {
     }
 
     public void setDisplayName(String displayName) {
         this.displayName = displayName;
     }
 
+    @Nonnull
     public BinEdNativeFile getNativeFile() {
         return nativeFile;
     }
 
+    @Nonnull
     @Override
-    public VirtualFile getFile() { return nativeFile.getVirtualFile(); }
+    public VirtualFile getFile() {
+        return nativeFile.getVirtualFile();
+    }
 
+    @Nonnull
     public Project getProject() {
         return project;
     }
diff --git a/src/org/exbin/bined/intellij/BinEdVirtualFile.java b/src/org/exbin/bined/intellij/BinEdVirtualFile.java
index a6073e93..b791478b 100644
--- a/src/org/exbin/bined/intellij/BinEdVirtualFile.java
+++ b/src/org/exbin/bined/intellij/BinEdVirtualFile.java
@@ -19,7 +19,6 @@
 import com.intellij.openapi.vfs.LocalFileSystem;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.openapi.vfs.VirtualFileSystem;
-import com.intellij.openapi.vfs.VirtualFileWithId;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -35,7 +34,7 @@
  * @author ExBin Project (http://exbin.org)
  * @version 0.2.4 2021/04/11
  */
-public class BinEdVirtualFile extends VirtualFile implements VirtualFileWithId {
+public class BinEdVirtualFile extends VirtualFile {
 
     public static final String PATH_PREFIX = "bined://";
 
@@ -192,14 +191,4 @@ public void setClosed(boolean closed) {
     public JComponent getPreferredFocusedComponent() {
         return editorFile.getPreferredFocusedComponent();
     }
-
-    /**
-     * Seems like some versions of IDE taps into this for some reason.
-     *
-     * @return invalid ID
-     */
-    @Override
-    public int getId() {
-        return 0;
-    }
 }
\ No newline at end of file
diff --git a/src/org/exbin/bined/intellij/BinaryFileType.java b/src/org/exbin/bined/intellij/BinaryFileType.java
index 323269c3..0cb9b538 100644
--- a/src/org/exbin/bined/intellij/BinaryFileType.java
+++ b/src/org/exbin/bined/intellij/BinaryFileType.java
@@ -77,6 +77,6 @@ public boolean isReadOnly() {
     @Nullable
     @Override
     public String getCharset(@NotNull VirtualFile file, @NotNull byte[] content) {
-        return CharsetToolkit.US_ASCII_CHARSET.name();
+        return "US-ASCII";
     }
 }
diff --git a/src/org/exbin/bined/intellij/gui/BinEdToolbarPanel.java b/src/org/exbin/bined/intellij/gui/BinEdToolbarPanel.java
index ee4c3a12..7fe8d85c 100644
--- a/src/org/exbin/bined/intellij/gui/BinEdToolbarPanel.java
+++ b/src/org/exbin/bined/intellij/gui/BinEdToolbarPanel.java
@@ -350,7 +350,7 @@ private void setActionSelection(AnAction action, boolean selected) {
         toolbar.getPresentation(action).putClientProperty("selected", selected);
     }
 
-    private static Icon load(String path) {
-        return IconLoader.getIcon(path);
+    private Icon load(String path) {
+        return IconLoader.getIcon(path, getClass());
     }
 }
diff --git a/src/org/exbin/framework/preferences/PreferencesWrapper.java b/src/org/exbin/framework/preferences/PreferencesWrapper.java
index 8e78f70f..a2e04303 100644
--- a/src/org/exbin/framework/preferences/PreferencesWrapper.java
+++ b/src/org/exbin/framework/preferences/PreferencesWrapper.java
@@ -27,7 +27,7 @@
 /**
  * Wrapper for preferences.
  *
- * @version 0.2.1 2019/08/08
+ * @version 0.2.4 2021/04/11
  * @author ExBin Project (http://exbin.org)
  */
 @ParametersAreNonnullByDefault
@@ -88,8 +88,14 @@ public void putLong(String key, long value) {
     }
 
     @Override
-    public long getLong(String key, long def) {
-        return preferences.getOrInitLong(prefix + key, def);
+    public long getLong(String key, long defaultValue) {
+        try {
+            String value = preferences.getValue(prefix + key);
+            return value == null ? defaultValue : Long.parseLong(value);
+        }
+        catch (NumberFormatException e) {
+            return defaultValue;
+        }
     }
 
     @Override