This bug was originally marked as duplicate of bug 159006, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.
Build: NetBeans IDE Dev (Build 201211130001)
VM: Java HotSpot(TM) 64-Bit Server VM, 23.3-b01, Java(TM) SE Runtime Environment, 1.7.0_07-b11
OS: Windows 7
Chiana: and again... Restarting IDE.
Chiana: After reporting #628786 tried again to debug but this occured.
java.lang.AssertionError: Debugger lock taken in AWT Event Queue!
Created attachment 127746 [details]
Created attachment 127749 [details]
Seems this is occuring when creating a modal JDialog splash on the system desktop, I will look further to see if it is possible to pindown where this occurs and what is beeing done at the moment.
Attaching screendump showing set bp's and current PC.
Created attachment 127750 [details]
Showing code snip where initially detected.
This might be related to the installed securitymanager, I commented that one out and it worked.
This is a problem in code, which was added to log the cause of issue #217048.
This problem is fixed by changeset: 239909:37f910cb0ed6
Integrated into 'main-golden', will be available in build *201211160001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
Log: #222077: Initialize the InvocationExceptionTranslated after the thread is notified about finish of method invocation.