First off, with your textures -- all images should be an even power of 2 in their dimensions. You should probably make that texture 256x256. You can squish the image if need be, then scale it wider in the editor, or just make it square to begin with. Also, the HR4 version should be 4x's the size of the original. So if that's your highres version, the one in the folder should be 64x64. If the 256x256 version is the low res one, the hr4 one should be 1024x1024.
On the map, you should probably name it something like "cr3hq" instead of just "hq"
The friendly fire sound on the red targets made me smile.