Because Arma Reforger is in active development, frequent updates often break trainers. From SQF to Enforce Script – Arma Reforger

: Like all trainer fixes, this tool will likely break the moment Bohemia Interactive pushes a major game update. You will be dependent on the mod creator for constant updates.

: Automatically corrects the broken memory pointers that frequently cause external trainers to crash after official game patches.

Often, trainers that function as mods can become "stuck" or corrupted during an update.