Please help me to solve this issue. I just reinstalled my win7x64bit sp1, and after I installed the newest version of avast, I can't disable a startup program with ccleaner 4.0.6, but if I uninstall avast everything is working. Why this behavior? I didn't make any changes to the settings, I simply don't understand, I even re-downloaded the avast 2014 free setup file, but in van. Thx