If you are sure the map is unlocked and put it into cs card\map ., so try this
1). Create new folder name MAP2
2). Copy map in folder "MAP" into --> folder "MAP2"
3). Delete folder MAP
4). Rename folder MAP2 --> MAP
You may see the map now.
thanks, i tried that, it works!
I ended up sing MAP4 in capitals, it just would not work in lower case or any number combination below 4