Vipre Scanner Stalls on Random Items...

Vipre Scanner Stalls on random, different items. I just downloaded the Free Trial of Vipre last night, and have since, stalled over 4 times (once for about 6 hours) on seemingly random files. One was an .avi movie file. The other was a .rar file, the other was a software program (all legit, clean files btw). Is there no way to skip files mid-scan? Also everytime I leave he scan section of the software it automatically stops the scan, and I can't continue where I left off... Is this delaying tactic so I can never get to scan my computer during the trial? Can Sunbelt fix their stalling scanner?