I have been running autocad 2006 on xp sp 3 for the past 3 years and its been running well until yesterday. When i started it it produced an "ereg" error, when I clicked on ok a popup window showed "varifying registration" and froze there , I have tried restoring to an eailer date , reinstaling the autocad . Scanned with antimalware bytes , Microsoft security essentials , ccleaner and still no joy can anyone help me please.
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