AVAST antivirus clashes with the game launcher, as in it removes and quarantines the file as soon as your run it without warning. Adding it as an exception doesn't work. I just sent the file for analysis so it might be fixed soon but idk.
EDIT: If you guys are having trouble with avast deleting the game file: Run avast, click on security, go to virus chest, click on the checkbox next to feralheart.exe, click the three dots next to delete, and click on send for analysis.
it doesn't fix it but it might make avast stop deleting it soon enough.