Fran Parker.
I beleive you, but I cannot reproduce it I have seen this type of error before when rendering because the size of the rendering area becomes 0 or less than zero. However, I have not been able to reproduce this yet. Can you post a sinple sample that reproduces the error? Thanks.
Also, we fixed some things just like this in version 1.6.1, are you running 1.6.1?
Attached is a simple project to demonstrate the problem. To get the exception, run the program, minimize the form and then attempt to restore it. I am running version 1.6.1. Also, for what its worth, I'm running under Vista with the Aero interface enabled. If you have any questions or if there is anything else I can do to help, let me know.
Fran Parker
Note: I know that you do not have the source for this, but we are planning on posting an update in the next week or two which will include some very minor fixes, including this one, as well as some new samples.