one thing i could suggest is get a taskmanager program that shows all tasks running. if you cant find any. i just use clrean ram and it shows all tasks running to select them to tell cleanram not to kill that app when you run it. run cleanram to see whats running, close it. then run bluetooth settings and then open it again and see what new apps are running then use total commander to search for that .exe to find the path? its a lot of messing around but it works? here is a link to that app i was talking about.
http://forum.xda-developers.com/showthread.php?t=514333