loaded trial version od digital center and worked fine for a while then it locked up,and every time i select a catagory in the main screen it freezes up ,uninstalled and deleted file in programme files deleated sql file and loaded the programme back up but same thing happening over and over,am at a loss at this stage anyone got any ideas,i have dell optiplex 760 with 2 gig graphics and 4 gig ram.