yea could be. when you see this assert, you can attach the visual studio debugger to the GoogleDesktopDisplay.exe process (in VS.net using the 'Tools > DebugProcesses' menu option) and press 'retry' in the assert dialog. That will break in the debugger and show you where it is happening. And if you look at the 'Debug > Windows > Call Stack' window you can see the sequence of function calls leading to the error.. may be if you can post that sequence of calls here someone can help find what is the problem