Here the detailed error message:

ag.ion.bion.officelayer.document.DocumentException: java.io.IOException: com.sun.star.io.IOException: java.net.SocketException: Connection reset
	at ag.ion.bion.officelayer.internal.document.DocumentService.loadDocument(DocumentService.java:472)
	at git.editor.OpenOfficeEditor.createPartControl(OpenOfficeEditor.java:180)
	at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:662)
        ...        
        at 
Caused by: com.sun.star.lang.DisposedException: java.io.IOException: com.sun.star.io.IOException: java.net.SocketException: Connection reset
	at com.sun.star.lib.uno.bridges.java_remote.java_remote_bridge$MessageDispatcher.run(java_remote_bridge.java:171)

Hey Markus, I am so sorry to bother you again. I now migrated my plugin from the development platform to a live platform and get some strange behaviour. In my plugin I wrote my own OpenOffice Editor based on NOA which worked perfectly fine on the development machine. I then deployed the plugin to a different system to try it out. When I try to open an OO document, sometimes (that is what makes me think there's something wrong) Eclipse completely freezes and I have to kill it and restart it, but sometimes it also works fine. To me it looks like there is some kind of race condition somewhere. Basically, I have noticed three different behaviours:
1) Everything works fine and the document is displayed as expected after a few seconds (~10% of the time)
2) Eclipse completely freezes and doesn't respond even after a waiting period of 10 minutes (~80% of the time)
3) Eclipse freezes for about one minute and then opens an empty editor with a log in the error log stating a connection reset (I will post the exact error message if I can reproduce it, it's very rare)
I instantiate the editor with:

HashMap configuration = new HashMap();
configuration.put(IOfficeApplication.APPLICATION_HOME_KEY, OPEN_OFFICE_ORG_PATH);
configuration.put(IOfficeApplication.APPLICATION_TYPE_KEY, IOfficeApplication.LOCAL_APPLICATION);
officeApplication = OfficeApplicationRuntime.getApplication(configuration);
officeApplication.setConfiguration(configuration); officeApplication.activate();
panel = new Panel(new BorderLayout());
officeFrame = officeApplication.getDesktopService().constructNewOfficeFrame(panel);

and close it with:

IDesktopService desktopService = officeApplication.getDesktopService();
desktopService.terminate();

Any hints would be appreciated, thanks.