I have used DraftSight now for a few months, I have had some issues with the programme crashing but regular saving means it doesn't get too bad. Current problem however is more serious, I am trying to view a DWG file and it seems corrupted however viewing it on eDrawings it's perfect. I wonder if it's possible to uninstall and then reinstall using my original details? 

I have attached a screenshot​​ of what I get on eDrawings and the one from​​​​​​​ Draftsight