Hello Giovanni,

Could you describe in what circumstances the borders of NForm aren't painted, and you received this exception.
It will be very helpful if you are able to provide us with a example application that demonstrates the problem.

Best Regards,
Nevron Support Team

Hello,
I have the problem shown in the attacched image.
Sometime the windows border is not painted except for the caption part.
Also, if there is another application running that use nevron libraries
i receive many unhandled exceptions of type "object in use elsewhere"

Is there a way to avoid this kind of problems?