Hi,
I would like to clarify what exactly you mean by 'crash'. Do you mean that
1. SQLyog becomes unresponsive and white over, and Task manager says SQLyog is Not Responding? (this is actually called hanging, rather than crashing)
Or
2. You get a dialog saying SQLyog has crashed? If so, could you attach the crash dump(s) here?
Regards,
Ashwin