Berserker, reported, majaczek did his attempt and failed

Here I'd like to raise another issue related to majaczek's work.
The latest Emerald plugin is not compatible with RoE and AB campaigns. The game crashes at loading (debug). To my understanding, that's becoz of special limits of artifacts (ie, a hero has only 4 misc slots, can't assemble combo arts) in these campaigns that conflict with Emerald. But it turns out moving these campaigns from Data to Maps folder for launching them through "Custom Campaign", problem solved. This says the problem basically has nothing to do with the map files, it is with the engine or hardcode instead.
Berserker, is it convenient for you to check whether the limit can be raised from ERA?