Error Message

Hi there,

I have downloaded CamStudios and I DESPERATELY want to use it but I keep getting the same Error message no matter what I try to do, Fixed Region, window, full screen, any I get "The specified device handle is invalid. in Stop()"

I have tried everything I've found in this forum, I've uninstalled and reinstalled x3, I've watched the whole 40 minute vid and set my dimensions to everything stated, and to be divisible by 4. Still the same message.

Please help?

PS - using Windows 8.