GIMP: A/V false positive

I just installed GIMP on my Google Drive and my Microsoft Security Essentials flags the file 'imagemap.exe' as containing the trojan PWS:Win32/Lineage.gen!C.dam (password-stealing). I've scanned through the forums and site and have seen only one other post regarding anything similar. In their case it was Norton and the 'imagemap.exe' and 'file-compressor.exe' were flagged. I haven't seen any other info on any false positives. MSE does not flag the latter file.