And what about all the ones that say it's clean? If you really never saw this before, you're obviously very new to Renpy. Everyone knows that it tends to produce false positives. And those positives are basically all generics, if you discard the ones that are generic or that don't give specifics that leaves what, two left?
You're tiring... 21 engines today (on 69 total engines), BTW, still raising...
The fact that a signature is generic or heuristic is not a proof of a false positive, but that a generic-purpose instructions set were detected WITHOUT the specific signatures attached to a specific virus - forbidding then to identify it clearly. Simple example, NOT related to this particular case: detecting a keylogging code or virus-like encryption code is way enough to trigger a generic warning, especially with unsigned executables, because a normal program do NOT need such features. My own programs, for work, typically triggers a LOT of AV softwares because they access directly to custom hardware... Unless we access it through WinDriver, for example, or other trusted frameworks.
You can safely assume a false positive when only one or two MINOR engines report something generic. You cannot when several MAJOR engines do it, even with generic/heuristic (and worst if named). The fact that other engines do not see it is not a safety proof (you're using here a fallacious argument). The important fact is that several says it's unsafe. What you say is like "if hundred of people do not accuse someone of a crime, he's then innocent despite several trustworthy people says he's a criminal". However, it can be debated when one only UNtrustworthy person make this accusation...
As I said it already,
precautionary principle. Nothing more, nothing less.
When a development software produces compiled executables that triggers false positives (or when the runtime does it), it's usually a matter of days before AV engines stop reporting it as infected.
Until then, again, I won't execute it.
You do what you want with YOUR data, you're free, but it's irresponsible to encourage newbies to run something that triggered several antivirus softwares, at least until the problem is solved - if it's a real false positive, then AV engines won't detect it anymore soon and/or Ren'Py devs will solve the problem and release a new, safe version.
BTW, two years is a little eternity for softwares... Way enough, in particular with all games using "old" versions of Ren'Py, to see enough versions without ANY AV problems and be suspicious when ONE causes a problem.