well, Zaz just inform me that there is a bug in the packing/unpacking routine of the CSM.
how to solve it
1) be sure you are using the latest cms version, if you're unsure get this
[
195.191.53.2]
2) if cms does not unpack all needed files in the designed dir, you can find a big .tmp file in the same dir of the .cmi, rename this file as .wad i.e. season99.tmp as season99.wad
3) now use gp4master to unpack this wad file, unpack where you want, but at the end copy or move all files into the gpsaves/carsets/s1999 directory.
then start csm, there will be a season1999 tab in the carset list.
hope this help, if not wait until we repack the whole thing using winrar.
sorry for that but we have tested the cmi on various pc and we never get troubles.