I ran virus scans using a program called avast on two computers with Media Lab 2004 and now I cannot open Media Lab. When I open up Media Lab with the desktop icon it asks for a license code; when I try to open up an experiment or questionnaire file it gives me the following message:

Run time error 429
ActiveX component can't create object

What's the easiest fix for this problem? Can I use the license codes originally used for the two computers?

Thanks.