I can't select any files in the virus chest to perform actions
pls hlp
Does the mouse work in other areas of the avastUI ?
Have you tried a simple reboot, does that resolve it ?
If not try an avast repair:
Win7 - Control Panel, Programs & Features, uninstall a program, select 'avast! Anti-Virus,' click the Change/Remove button and scroll down to Repair, click next and follow.
You may need to reboot after the repair. [