From version 9 I used a new Ren'py version so might be that. Poorly written antivirus like that one, automatically flag new code as virus, preventing people from running them. Then after some weeks they work, like if they discovered that DOH there aren't virus in my games!

I honestly think all you need as antivirus is the built-in Microsoft Security Essentials (available in W7). Everything else just slows down your computer and provides no real advantages (and many problems running games, since even other indies have issues beside me), assuming you just do a normal use of your computer and don't go surfing dubious sites

Ah also, a great site to check is this one:
https://www.virustotal.com/
This is the report for the latest update:
https://www.virustotal.com/en/url/1913f ... 393351452/