Autodesk Inventor

[#1]

Hello ,

Dimension lines and hatching are invisible while dimensioning and zooming (only use scroll).

This problem isn't continous.

I have installed SP1 and updated all software.

Any ideas on what is causing this?

System :

İntel core i7 2,93 GHz

Windows 7 64 bit

8 Gb RAM

Geforce GTX660 Ti