I am using FreeCommander XE 2015 Build 685 Public 32bit on Windows 7 SP1. I just downloaded and installed it (using the installer). I had been using the XE Build 650 previously without any problems. I actually had to go back to that version from the beta that was available (it was posted on your site at the time that the Build 650 was the default download). That beta had the same problem for me. XE Build 650, however, was fine.
It's a wonderful program, this has really been the only problem that I have ever experienced.