In trying to remove this file, all the other save files are gone (don't worry i haven't played in a while anyway). Also, typing the command caused this to appear:
Didn't remove the file, but perhaps this could help make the problem more clear.
That's because PowerShell instead of command prompt popped up, that's okay, we just need a different command. Try this:
Remove-Item "s_I'm abouta die" -Force
If none of this works, should i report this to the devs as a bug?