Draftsight crashed after loading and editing a DWG file

Hello.

Everytime when I try to load and edit something in a DWG file, the program Draftsight crashed immediately.

My notebook is an Dell XPS M1330 with Intel Core2 Duo CPU T9500 2.60/2.60 GHz – 32 bits and 4 GB memory. Videographics card is Mobile Intel 965 Express Chipset family.

The OS on this notebook is Windows Vista Ultimate.

On this notebook I have Solidworks 2011 running too.

On another system Dell Optiplex desktop with Windows XP is Draftsight working fine.

Has anyone any idea why Draftsight is crashing the whole time?

Thanks,

Dolf van Munster