Previous version 2.x? worked OK. Latest shows old problems from 1.7 & 1.9.
Win 7 SP1 64 bit
Have redownloaded zip file. Problem same whether run from PC or from USB stick
Custom scan works always
Smart scan may need reboot to start & complete otherwise closes after 17 seconds. Why can't you update database unless scan is run? finalisation takes a long time, I have a Q9550(!), & doesn't always complete. Close & restart CCE & update shows 50% immediately.
Autoruns now only completes if run in Vista SP2 compatibility mode, otherwise it starts & closes within 10 seconds. This is however you start program: from folder icon, from killswitch menu or option in CCE.
Run as abministrator has no effect on success.
Killswitch works ok

Not had to use to clean PC thankfully but I like the option of having this for emergency use.