First of all, hello, I am a university student and the idecad curriculum has started at school. I downloaded idecad static demo version from idecad in site to work at home by myself. But when I run it it gives an error. The error is as follows: When you move the mouse arrow to the perspective screen, the whole screen changes to perspective view and all other options are lost. It appears when you move the mouse over it. It happened every time I opened the application, so I deleted and reinstalled it and updated the video card software, I faced the same problem again. If you know the solution or suggest a way to solve it, I would be very grateful. Thanks.