I got many problems on making this game playable, here is some reference if you want to play with newer revisions.
SVN R5149: This game needs:
Enable: FIFO BP Hack, without this the game will hardly start, it may start after countless tries. Crashes may happen with it but without it crashes are more frequent.
As said on the first post, safe texture need to be enabled to fix fonts, thanks for the reference.
Use OpenGL to Scan Alien Doors.
DirectX Spellforce builds gives 2x more FPS than OpenGL but it does not scan alien hologram doors, so always save your games into the memory card and then if you want more speed then switch to DirectX, save states may work here.
Feedback: All are working great(Controls, Fonts, FX's, Musics Graphics) so far, only problem that needs to be fixed on DirectX plugin is the scan alien door, I had few crashes, crashes usually tend to happen while showing movies.
I will update this post if I find others problems.