Since I made the switch from frontview battle to sideview battle all of the monster graphics have been replaced to make sense visually and the sideview battlers Thalzon did are of higher quality. Since it's now pulling from the 'sv_enemies' folder for encounters it doesn't play nice with old saves that were pulling from the 'enemies' folder which is a different folder it pulled frontview battlers from. Since it was a big change structurally within the program itself it won't work with old saves unfortunately. I should have noted this in the last update, sorry for my oversight on that, I'll edit to add that in.
I ended up starting a new game when I made the switch for my personal Level 2 playthrough so I could try some different class builds and weapon/armor combos so I didn't catch that it wouldn't work with old saves right off.
Going forward I don't intend to make any structural changes that will break old saves. Thanks for the post and I apologize for the inconvenience.