I would exercise caution here, although this could be a false-positive, considering that a lot of the other scanners on the site didn't pick anything up.
TR/Dropper.MSIL.Gen, according to Avira's website, is a generic name for specific Trojans that Avira detects that are currently not specifically named.
In this case, I would run this in a virtual machine or on a test machine that doesn't have physical access to your main computer. Install the program, then run a full system scan with various virus/malware scanners, such as Malwarebytes, ESET, Avast, etc..
I rarely recommend this, but you could also try downloading it from other reputable download sites, although your download experience may vary.