SDS + Yggdrasil ABS Error, Scripting newbie hoping for some assistance Options

[zaits]

Recently I've tried to mix the stealth detection system with Yggdrasil ABS. I used a common event to have a "engage" trigger to change the event to go from MGS style hunting and into combat. That's working fine-ish so far but I keep running into the same error.

The error relates to the tile checking portion of the stealth detection system (205 - 374 in game_stealth). The specific error line changes depending on direction anyway. I've tried searching but couldn't come across anything related.

I'll provide more information if its relevant

Thanks if anyone can help.