I'm trying to get a new weapon firing sound in-game, but every time I try to compile my .wavs in Tool, I get this error:

Code:
11.19.09 08:25:12  tool pc 01.00.08.0616 ----------------------------------------------
11.19.09 08:25:12  reference function: _write_to_error_file
11.19.09 08:25:12  reference address: 42ca20
11.19.09 08:25:12  Couldn't read map file './toolbeta.map'
11.19.09 08:25:12  MM:  'couldn't open stream.' (ACMERR_NOTPOSSIBLE#512)
11.19.09 08:25:13  MM:  'couldn't open stream.' (ACMERR_NOTPOSSIBLE#512)
I've searched around and I can't seem to find an answer to this problem. Anyone know what I'm doing wrong? Also, note: I can make sounds with ogg compression; only xbox sounds don't work. I'm almost positive I have the latest codec.