Confirming I likewise experienced the identical situation as was reported in the first post of this thread by jollywolf: An unsuccessful install ["You are unprotected! The avast service is off...self defense is off."] , along with a corrupted (unusable) uninstaller.
Two such installation attempts were made in Normal Mode, one with 2014 build 2006, another with build 2007 [each preceded by running AvastClear in Safe Mode].
I then "gave up", and reinstalled version 8 build 1497, with absolutely no problems at all.
For what it's worth, this was on a Win7x64 PRO SP1 system, and yes, I have MBAM PRO running in real-time, should that turn out to be a factor [MBAM did not report/log any issues]. Additional security as per my signature.
Additional Notes: I had successfully installed/tested 2014b2006 on a different Win7x32 PRO SP1 system without MBAM; as well as on an XPx32 PRO SP3 system which I'm still using.