a lot of the quest identification number and npc identification number is changed in this patch. this makes your bot try to get quest from some new npc (that isnt the origional intended target that deals with the quest)
example
old patch: quest id 0001 with npc that is 001
new patch : same quest id now 0002 npc that gives it out is 002
the bot tries to find the quest id 0001 from npc 001 and cannot find or find the wrong npc that now has the old npc id number
basically the whole questing pack has to be reviewed and updated for it to work properly otherwise the bot cannot properly identify its target (who to hand in who to hand out and what quest you have completed and not)