An other little add-on.
The .prt file is generated by the BSP phase of the compiling process. It is for
the VIS phase which deletes it normally, but with that -saveprt switch you can prevent this deletion.
So if you have the .prt file you have two options:
1. you used that -saveprt switch and everything is OK
2. there is a leak in your map
L_A_User: every time you send me that map file I fix it for you. What are you doing?