Hi Exodus,
Range Check Erros is becaus the .mox models from UC are an newer version. Use "downgradeMOX". (google). Search for this at the synetic forum.
MTL files you can open with the editor. Or you use Söhnleins MTL writer. Look downloads here.
LG
Ich habe: Nitro, Crash Time, Highway Nights, Das Syndikat, Undercover und World Racing 2 =)