dunno if this has been found before, just found it myself, thought i'd share.
in egypt the beast of legend quest gives 2 skill points so do it, exit game /my documents/my games/titan quest/save data/main/your character then sort by modified and delete the last file. repeat the quest for 2 points each time. the good centaur quest gives 2 atribute points if ya wanna do that.
p.s if you get the bug and you can't speak with someone to continue a quest or get on a boat to a new map do the same thing.
party