Hello. I'm trying to make a custom mission briefing for my map CTF_Keepaway to explain its uncommon game mode. I looked on the Valve Developer Wiki (thanks to Nineaxis for linking me to it) and followed their instructions. I made the .txt file and named it properly but I can't get it to pack into the BSP properly. Whenever I try to open BSPZip, CMD pops up but then disappears immediately. I tried Pakrat but that didn't work either. I still get the default CTF briefing when I load the map in TF2. Any help with this would be greatly appreciated.