I’m also getting that error message: “error during open ATL error number -1” I’m running windows XP-home, and did a clean reinstall a short time ago. I had to re-download the Avast home workstation and used my previous registration key. Every time I try to scan a download with a right click, that message comes up! I do not feel very secure right now. Can you help me? http://2ni2.com/emoticon/special/botando.gif