Improvements to property sheet, icon for about view.
diff --git a/org.eclipse.amp.axf/plugins/org.eclipse.amp.axf.ide/src/org/eclipse/amp/axf/ide/ModelViewManager.java b/org.eclipse.amp.axf/plugins/org.eclipse.amp.axf.ide/src/org/eclipse/amp/axf/ide/ModelViewManager.java
index dbc8a89..53174c1 100644
--- a/org.eclipse.amp.axf/plugins/org.eclipse.amp.axf.ide/src/org/eclipse/amp/axf/ide/ModelViewManager.java
+++ b/org.eclipse.amp.axf/plugins/org.eclipse.amp.axf.ide/src/org/eclipse/amp/axf/ide/ModelViewManager.java
@@ -549,7 +549,7 @@
     private synchronized void deactivate() {
         final IWorkbench wb = AXFWorkbenchPlugin.getDefault().getWorkbench();
         if (wb != null) {
-            wb.getDisplay().syncExec(new Runnable() {
+            wb.getDisplay().asyncExec(new Runnable() {
                 public void run() {
                     if (contextService != null) {
                         contextService.deactivateContext(ideContext);