I've just watched through vc2 maps folder and found a map called Grotte which I didn't have.(there was no info about it on forums when it was uploaded, that's strange).
And when I dl'ed it and tried to unpack, it said the archive was broken WTH is that and what should i do to play it?
EDIT: 1 more question, in gallery is a pic of new fraggel's map, who knows here to dl?
put the cbf plugin in 1 folder , attribute it in the options/configuration/compressing by typing cbf and choosing the path to the plugin, no reason it doesn't work , if you still get an error with your os , maybe change properties of the exe
Sometime problems occure with .7z files,that's why I upload .rar files. Try to upload same map with .rar extension,archive wont be broken.
Edit :
Downloaded map,tried to open with latest WinZip,WinRar,7Z, can't - broken.... Upload .rar file,or send map file to me,i will rar it,and upload it to page.
, thanx sb, i didn't even look at archive extention 
