Go to the console and type in
sv_pure 0
then try reloading it.
I'm sorry, I did that. I run the following, and get the error:
/sv_pure 0
/devmap MyTest
Can't find map map/MyTest.bsp
The map is located in Open Arena\baseoa\maps\MyTest.bsp
EDIT: Odd thing is, I finally got it to load again, and it was missing all the extra stuff I had added. (quad, weapon, extra light) This was after I recompiled it at least 20 times.