@ TNT
Could you - perhaps - try the same as we do on the next installation trial :
- manual registry cleaning as described above
THEN
- installation as in FAQs, ofc best in "compatibility mode"
If problem remains you might try what Parkan has done :
i used 7 zip on _Crossfire20setup.dat and unpacked 2 folders:Interface and movies.Unpacked to mod folder and installed via FLMM.Work fine.