The Kingdom of Kaliron

I failed the quest "SAVING NEBU", and I wait for 10 mins for the witchdoctor to revive.
When he appears again, I talk to him and accept the quest for the 2nd time, then my hero cannot move, or even talk to another NPC.

Type "-goodbye"

these (null) chat errors usually occur if the game was saved using the wc3's internal save/load system

Loading this way doesn't properly reload the game cache which results in these errors

sometimes this is not the case, but most often this turns out to be the problem

That particular bug always happens when you talk to the troll after he dies in regular games.

So remember to type the aforementioned command.

thought that was fixed..... anyways It will be in 3.0