diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d2c2525..bb056c1 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ghidra: ${{ fromJSON(format('[{0}]', inputs.ghidra_version || '"latest","11.4.2","11.4.1","11.4"')) }}
+        ghidra: ${{ fromJSON(format('[{0}]', inputs.ghidra_version || '"latest","11.4.2","11.4.1","11.4","12.1.2","12.1.3"')) }}
 
     steps:
     - name: Clone Repository
diff --git a/binexport b/binexport
index 17c4363..fdcfad4 160000
--- a/binexport
+++ b/binexport
@@ -1 +1 @@
-Subproject commit 17c4363b7d2ece44161a0ebced60f4e66d309af8
+Subproject commit fdcfad4c55e9b52bcc5f005171c0cf91c30c2cc2
diff --git a/src/main/java/bindiffhelper/BinDiffHelperPlugin.java b/src/main/java/bindiffhelper/BinDiffHelperPlugin.java
index 41813d7..2cba868 100644
--- a/src/main/java/bindiffhelper/BinDiffHelperPlugin.java
+++ b/src/main/java/bindiffhelper/BinDiffHelperPlugin.java
@@ -105,13 +105,16 @@ public BinDiffHelperPlugin(PluginTool tool) {
 			
 		}
 
-		if (System.getProperty("os.name").toLowerCase().contains("win")) {
+		String os = System.getProperty("os.name").toLowerCase();
+		if (os.contains("win")) {
 			defaultBinPath = "C:\\Program Files\\BinDiff\\bin\\bindiff.exe";
 			defaultDiffCommand = "notepad++ -multiInst -nosession -lc -pluginMessage=compare \"$file1\" \"$file2\"";
-		}
-		if (System.getProperty("os.name").toLowerCase().contains("nix")) {
-			// defaultBinPath = "/opt/bindiff/bin/bindiff";
-			defaultDiffCommand = "x-terminal-emulator -e 'diff -u \"$file1\" \"$file2\"'";
+		} else if (os.contains("mac")) {
+			defaultBinPath = "/Applications/BinDiff/BinDiff.app/Contents/MacOS/bin/bindiff";
+			defaultDiffCommand = "opendiff \"$file1\" \"$file2\"";
+		} else { // Linux/BSD
+			defaultBinPath = "/opt/bindiff/bin/bindiff";
+			defaultDiffCommand = "meld \"$file1\" \"$file2\"";
 		}
 
 		binDiffBinary = Preferences.getProperty(BDBINPROPERTY, defaultBinPath);
@@ -311,7 +314,7 @@ public void updateEnableNamespace(boolean enable)
 	
 	public void updateDiffCommand(String cmd)
 	{
-		diffCommand = cmd == null || cmd.isEmpty() ? defaultDiffCommand : cmd;
+		diffCommand = cmd == null || cmd.isBlank() ? defaultDiffCommand : cmd;
 		Preferences.setProperty(DIFFCOMMAND, cmd);
 	}
 
diff --git a/src/main/java/bindiffhelper/BinDiffHelperProvider.java b/src/main/java/bindiffhelper/BinDiffHelperProvider.java
index 95f5a85..485e53d 100644
--- a/src/main/java/bindiffhelper/BinDiffHelperProvider.java
+++ b/src/main/java/bindiffhelper/BinDiffHelperProvider.java
@@ -447,7 +447,14 @@ public void mousePressed(MouseEvent e) {
 
 						String command = plugin.diffCommand.replace("$file1", path1.toString()).replace("$file2",
 								path2.toString());
-						Runtime.getRuntime().exec(command);
+
+						if (System.getProperty("os.name").toLowerCase().contains("win")) {
+							String[] shellCommand = { "cmd.exe", "/c", command };
+							Runtime.getRuntime().exec(shellCommand);
+						} else {
+							String[] shellCommand = { "/bin/sh", "-c", command };
+							Runtime.getRuntime().exec(shellCommand);
+						}
 					} catch (Exception ex) {
 						Msg.showError(this, getComponent(), "Error", ex.getMessage());
 					}
diff --git a/src/main/java/bindiffhelper/DiffWizard.java b/src/main/java/bindiffhelper/DiffWizard.java
index 970949f..ef0792c 100644
--- a/src/main/java/bindiffhelper/DiffWizard.java
+++ b/src/main/java/bindiffhelper/DiffWizard.java
@@ -346,17 +346,13 @@ public boolean isValid() {
 		if (tp == null || tp.getSelectedItemCount() != 1)
 			return false;
 
-		if (tp.getSelectedDomainFolder() != null)
-			return false;
-
 		var df = tp.getSelectedDomainFile();
 		return df != null;
 	}
 
 	@Override
 	public boolean canFinish(DiffWizardData data) {
-		// TODO Auto-generated method stub
-		return false;
+		return isValid();
 	}
 
 	@Override
@@ -408,28 +404,31 @@ public void initialize(DiffWizardData data) {
 		this.panel.add(cb);
 		this.panel.add(tp);
 
+		cb.addActionListener(e -> notifyStatusChanged());
+		tp.addTreeSelectionListener(new GTreeSelectionListener() {
+			@Override
+			public void valueChanged(GTreeSelectionEvent e) {
+				notifyStatusChanged();
+			}
+		});
 	}
 
 
 	@Override
 	public boolean isValid() {
-		if (!cb.isSelected())
+		if (cb == null || !cb.isSelected())
 			return true;
 
 		if (tp == null || tp.getSelectedItemCount() != 1)
 			return false;
 
-		if (tp.getSelectedDomainFolder() != null)
-			return false;
-
 		var df = tp.getSelectedDomainFile();
 		return df != null;
 	}
 
 	@Override
 	public boolean canFinish(DiffWizardData data) {
-		// TODO Auto-generated method stub
-		return false;
+		return isValid();
 	}
 
 	@Override
@@ -439,7 +438,7 @@ public void populateData(DiffWizardData data) {
 
 	@Override
 	public boolean apply(DiffWizardData data) {
-		if (cb.isSelected()) {
+		if (data.useProgram2) {
 			try {
 				data.program2Df = tp.getSelectedDomainFile();
 				Tool newTool = plugin.getTool().getToolServices().launchDefaultTool(Collections.singletonList(data.program2Df));
@@ -458,7 +457,7 @@ public boolean apply(DiffWizardData data) {
 	public JComponent getComponent() {
 		return this.panel;
 	}
-	
+
 	@Override
 	public boolean isApplicable(DiffWizardData data) {
 		return !data.isFromProject;