@gautam7,
I don't know about other programs' betas, but I'd suggest not testing 2 betas simultaneously. I mean, don't try OA beta AND simultaneously an Avast beta. So, keep using Avast stable 6.0.1203 for now.
Beyond that, please wait with the new Avast releases. Although a new stable version is supposed to be released, it seems there are still some problems (and I'm referring to 1289, no the previous 1287).