Save it into the Hammer folder instead. This is what u do. In the configuration options, where it says "Place compiled maps in this directory..." put in the valve/maps folder.
For example
DRIVE NAME/SIERRA/Half-Life/valve/maps
Then where its says "RMF directory" put it in the maps folder in the Hammer folder
For example
DRIVE NAME/Hammer/maps
Now save that map with the new directories. Run it and see what happens! If it doesn't work, well, um, ur map is screwed!
![:P](http://192.241.182.11/images/smilies/tongue.png)