Not all XRCs like all CF cards. Just because you formatted it with Win 95 does not guarantee the XRC operating system will like it. If the operating system in the XRC is old or the XCP01 (main processor) is old you can't use anything bigger than a 32 Meg. and still not all CF cards work.
The CF card I'm trying to use is the CF where allways did the Backup, and after used it in another robot, don't work, that is the reason why I suppose the problem is the format or te CF.