Freezing/Crashing Mod Error using Snow Map in FE8 with Adjacent Units

I am working on a FE8 Mod using FEBuilder. I ran into a problem with the new map that I am working on, which uses the snow map from FE7 in FE8.

The entire mod is freezing/crashing whenever I move one of my units adjacent to an enemy unit to attack as well as when I move a unit onto a house. There is no freeze/crash when I try to do a ranged attack against an enemy - only adjacent attacks, and it only appears to be happening on the snow map.

Has anyone seen this type of issue before or have any ideas how to solve this? I honestly have no idea how this can be fixed at this point. Does it make sense to go back to an earlier version of the mod and try again?

Please send report 7z.
https://dw.ngmansion.xyz/doku.php?id=en:guide:febuildergba:report7z