Thanks for the diagnostic tools! According to the tools, the software is probably safe, so I guess I'm gonna be trying disabling the antivirus while I install and hoping that avoids the problem. I'll keep those tools bookmarked for future use.
I personally find it funny that when I ran it through VirusTotal, there were only four antivirus vendors that marked it as malware, and the only two I have ever used were among them. It feels nice seeing my antiviruses being as paranoid as I think an antivirus should be.
Nah, I think it's their cats