Cant install due to htmlayout.dll

I had avast working fine then this error started out of nowhere. I tried the fixes of copying and pasting the file to system folder, running a malware check etc as i read in some other posts then tried uninstalling with the uninstall tool and re installing but when i go to re install from a fresh download the same error pops up about htmlayout.dll not starting and cant load gui.

This is really frustrating and if anyone can help me I would appreciate it, I want to keep using avast but if it wont work :frowning:

What OS/SP?
What exact version of avast?
Do you have/had any other av installed?

Try this: http://forum.avast.com/index.php?topic=140574.msg1032248#msg1032248