We had a problem with a file, and support told us that McAfee can have problems with pro series.  I guess you can tell it to ignore certain files, but that is a pain with several client files.  We were told that Norton might be a better option because you can have it ignore the whole folder of data files. 

Does anyone have input regarding anti-virus software?  I don't know why it would mess with the data file to begin with.  I was looking at reviews, and Norton does fair better than McAfee, but there are other brands that do even better such as Bitdefender.