Condensing Spell List in Battle

I might found a bug. I'm getting "Not enough MP" messages when monsters are normally attacking. They actually have enough MP and do cast spells but the message still appear whatever they do, it's almost spamming. The patch is not conflicting.

The annoying part is that it's not always happening right away...I can go on with a fight without a single message and it suddenly appear next fight (this make no sens to me but w/e). I've never had that bug before and doing by elimination leads to this patch.

I'm still trying to reproduce the bug so I know exactly how and when it happen but I'm too busy with work and other stuff so I will report later with more info.

Edit: FYI, I'm using your latest code.
Edit2: Getting random black screens during fights now (music continues to play and it stays black forever). I got one instance where it get black but glitches appear a semi second later. ROM was executed with only this patch. NOTE: I'm using FF3 v1.1 ROM.