Someone can help me?
May I upload some minidump file? Some report?
I am not sure I understood your problem, but in any case, the Clean Uninstall tools should be ran from Windows Safe Mode.
Since you are testing other security tools, you may find their uninstall tools at
http://thewebatom.net/uninstallers/security-software/Even when you use Windows Add/Remove... control panel, there might be residuals from other tools that might cause Avast (or any other tool) to run incorrectly. Some infection might have caused it too.
Anyway, if you still want to send (mini)dumps, you should make a zip with the dump and a readme.txt file, including any info relevant and a link to this topic. Please name the zip as your username-date-1.zip, or something unique.
The incoming ftp site is located at
ftp://ftp.avast.com/incoming. Be aware that it is write-only, so once you send the zip, you won't see it displayed.
It is important to post here the exact name of the file, so someone from Avast Team can check it. If you don't, it won't be checked.
I just hope someone else with better understanding than myself can help you then.