Can't Launch Game

Previously I have played on the 1.1.7 and 1.1.8 versions of the game and I’ve been able to patch and update them just fine, but the move to 1.2.0 is troubling me. I managed to download and install the new core but when I open the game an error message pops up saying:

Script ‘HM7 NEW CLASSES’ line 41: RuntimeError occurred. Load Library: MGC_Hmode7

What do I need to do to fix this problem, and load my previous save files?

I have the same problem as Birdsteeth. I don’t know about them, but I’m on a mac running bootcamp, if that helps.

I have the same problem on 1.1.8, I downloaded the launcher, then the core 1.2.3, and I have that HM7 script error.

Any fix?

Edit: fixed it by restoring my game files using the launcher, disabling firewall and anti-virus first.