Thanks dan for remembering this little but important aspect that can save hours of time in searching for ...
Personally in my development PC I have just Microsoft Security Essential because I too had many false positive errors from different AV software.
I than have few virtual machines each with different AV software. I use this method in order to test my application before releasing them and avoid users discover false positive by them self. In any case this is not 100% secure method because AV software change their algo and data every day.
Some internet protection software like ZoneAlarm (by Checkpoint) has the option to mark any executable as "change frequently" in order to mark them as "under development" avoiding false positive.
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