Rhino exited with code -532462766

Hi,

Making my first Component in GH, I ran into a Rhino Crash. It happens at the moment when I close a form for the second time. Basically the component reads a file, displays it in the form, adds something to it and then closes the file and the form. But if in the meanwhile somebody else changed the file, I want to give a warning and close the form. I use the FileSystemWatcher for this. But it also fires of course if I save the file myself. Then I don't want a warning. The error has probably something to do with the FileSystemWatcher, because there is no problem without it . I used the invoke method correctly though. And debugging in VS 2012 vb.net works ok. FileSystemWatcher fires twice, which according to many forums is normal behaviour. But it should only close the form the second time otherwise I get errors reading the name of the author, because the form is not there anymore of course. So I put a counter variable at class level. For checking the error I display a message with the counter value just before closing. Indeed that shows that the closing function is called twice through the invoker delegate. The strange thing is that the second message is shown even when I didn't click OK for the first. Maybe this gives a hint? Something to do with threading I guess. Any body any idea how to close the form in the right way.