I have Malwarebytes Anti-Malware on my 64-bit Windows 7, and it detects a trojan in the latest update. The old version did not have a trojan detected in it.
For the record, the new editor for Borderlands 2 has the same problem.
[Edited by litnin200, 10/29/2015 3:30:23 PM]
disable/uninstall all AV, firewall and other security software.
www.cheathappens.com/virus_warning.asp
You can also contact Malwarebytes and tell them to remove the false positives.
[Edited by PWizard, 10/29/2015 3:46:20 PM]