Did a search, but haven't got good results...

I have ver 6.5 commercial and downloaded the update to 6.6 but I get the following error :

Virus scan computer and reinstall GameStudio

Can't Update
Error #32

Did reinstall gamestudio but got the same result, I also downloaded again the update... but the same happens.

Thing is that I install with the 6.40 demo, and I can update to 6.5 but not to 6.6.