I downloaded the beta today and tried installing but the conflicting software scanner stops at 25%. It says "There were some issues during installation" and ends the installation there. I keep trying but without success.
Software scanner? Are you talking about on-demand antimalware scanners? As much as I hate having to do it, Malwarebytes was already off the system. I even took the extra time to wipe out its left over files and registry entries. Still a no go. F-Secure 2011 and 2012 install fine without issue.
EDIT: Okay, now it is working. Yesterday the beta wouldn't budge and now it is cooperating. Kinda weird, I guess.
Whatever software scanner you have, you can try to disable it for a while when installing F-Secure. That how it usually works.