Hi,

you did reboot after the installation ?

does this crash happen also if you start Win in SafeMode (F8-Boot) ?
If not, try a full scan there first… or try a full scan with Archive-scanning NOT enabled first

if all this doesn’t work, you might have an existing virus on the pC which kills avast

try OnlineScanners from TrendMicro and/or RAV then

Do you have all ServicePacks and critical Updates applied from Windows ?

:wink: