@Firefox - I run MalwareBytes alongside McAfee, yes. I use it if I suspect there is something that McAfee can't pick up. I'll locate it and send it. @ThexDarksider - I had downloaded the demo of 9.1, from the site. I scanned the installation executeable and found nothing. Somebody sent me a code for it, (which they assured me they had paid for but never used, having instead decided to use Cubase, although that's neither here nor there) but I didn't directly patch the executeable. The point is, from what I read of the infection of stdrt.exe, it also installs registry entries and regw2.exe, which has not happened on my system, and indeed, when I searched, it is apparently a program that is created when FL Studio is on your system.