I have found the same; something to look in to!
Details I found on my Win XP SP3; AVG Anti-viruse Free Edition 2011 v 10.0.1204 DB 1435/3406 (most up to-date version) reports: Scrivener\docformats\doc2any.exe as a ‘corrupted executable file’ and moves it to the virus vault. I did find this in Scrivener version1.4 but when I noted it Scrivener 1.5 was available so I moved to try it but AVG is clearly still reporting and acting on this issue. As an update also with Scrivener 1.55.
I had no end of problems when I had a windows partition and was using AVG. It saw LILO (my boot loader that I kind of need to boot–windows and linux) and deleted it, saying it was an MBR virus. Was I in for a surprise the next time I rebooted. There was no way of shutting off scanning the MBR. I swtiched to Avira, and didn’t have much issue after that.