Correction. The infection came from the direct download web-site, it was not your installer. Scared the heck out of me. I have been using your mods for quite a while and was pretty shocked to find a problem with it.
I tried to update to V4.0.17 and AVG detected that it was infected with MalSign.Generic.39B.
http://i256.photobucket.com/albums/hh168/HaldorPhil/Fun/AVG_MalSign_Generic_39B_zps5c0071a5.jpg
I was using the direct download link.