Ok so I installed Morrowind and Tribunal virtually without a hitch, HOWEVER I install Bloodmoon and the game begins to start up and is thwarted by a "Render Creation error" or some such thing. So I simply deselect it from the data files and decide to go on about my playing without for now, and when I go to load my game it says something about script "TribunalMain" not matching main data files or something of the sort. Im not very computer/Morrowind file meddling savvy. Any insight? Preferably without laying my save games to waste?

please?