Mob Skills (Bosses dont attack!)

Okay guys I have a major problem

For the last 3 days the bosses and mini bosses haven't been attacking players properly ie they don't use their skills and damage is low.

Now yesterday I managed to fix this and everything was working properly. Today players have reported to me that the bosses and mini bosses are not attacking as they should be (skills again)

I would try and fix it like last time but this is time consuming and I'm not sure 100% that it would work and would just mess up again. I have tried a clean monster.sdata but to no avail.

Also while we are at it some of the mobs don't aggro properly like they should. Again I fixed this but seems to have messed up again.

Please guys...any help?

If they are not using skills you should check in database if the mobs skills are present. The skills should have level 100. If they are not in database try to make a query from NpcSkill.sdata.