This is just a wild guess but here is the problem that I had with my player actions:

When exiting from one & entering into the second level, at the very beginning(loading) of the second level, my player had to be placed near the doors that he has just entered, and the level had three doors. So the player xyz had to be determined by the xyz of the doors BUT the door mdl's were placed in WED after the player mdl so the engine always issued an error message that he can't find the doors xyz & therefore can't place the player to the wanted position. Once I deleted the player mdl file from WED and re-loaded him to be after the door mdl files everything worked out.

If I told you something that you already know: sorry Just trying to help.