I have my plugin minimally working now but I'm running into a problem. If I edit a file using my plug-in and, with that file still open in the editor, close Oxygen, then when I open Oxygen again, I get a "Plugins-Errors" message box from Oxygen indicating an InvocationTargetException on my plug in class and these messages in the log: 1 WARN [ main ] ro.sync.G.W - Invalid field : systemID for class ro.sync.exml.I.B.A. ro.sync.G.B: Invalid serialized URL : rsuite:/.manageable-objects/6 1 WARN [ main ] ro.sync.G.W - Skip invalid object ro.sync.G.D: Missing system ID in the mark location. 1362 WARN [ main ] ro.sync.G.W - Invalid field : defaultScenario for class ro.sync.exml.I._.B.U. java.lang.OutOfMemoryError: Java heap space 4270 DEBUG [ main ] com.reallysi.rsuite.client.oxygen.RSuiteUriProtocolPlugin - in getURLSTreamHandlder(), returning new RSuiteUriProtocolHandler(): 13297080 And then a lot of these: 10967 DEBUG [ main ] com.reallysi.rsuite.client.oxygen.RSuitePlugin - In RSuitePlugin constructor 10968 ERROR [ main ] com.reallysi.rsuite.client.oxygen.RSuitePlugin - instance member variable is not null, throwing IllegalStateException But I'm not getting any messages from any other components of my plug-in so I'm not sure what I should be doing to prevent this failure. Thanks, Eliot -- W. Eliot Kimber Senior Solutions Architect Really Strategies, Inc. "Bringing Strategy, Content, and Technology Together" Main: 610.631.6770 www.reallysi.com www.rsuitecms.com Sent using the Microsoft Entourage 2004 for Mac Test Drive.