Step 1: Reconsider life because you are still working on GunZ
Step 2: Decide "it'll be alright, GunZ isn't totally dead"
Step 3: Uninstall Radiant
Step 4: Delete all '.MAP' files
Step 5: Download 3DS Max 2010 x86 Student Edition for free
Step 6: Download GunZ Plugins for MAX
Step 7: Reconsider opinion of whether GunZ is dead or not
Step 8: Decide "Nope, I already came this far, might as well keep going"
Step 9: Look up tutorials on basic mesh manipulation in max
Step 10: Create visual mesh, UV Map, and Texture
Step 11: Place Lights
Step 12: Go into World Edit and generate lightmap
Step 13-16: Fiddle with Lightmap until it works
Step 17: Give up on map and quit gunz development for a few weeks out of frustration
Step 18: Feel rejuvenated and delete old project, repeat steps 1-16, skipping 17-18, moving directly to 19
Step 19: Work on collision mesh that is a closed shape
Step 20: Keep working on collision mesh that is a closed shape
Step 21: Go in-game and fall through the world
Step 22: ... and fall through the world again
Step 23: ... and again
Step 24: ... and again....
Step 25: Ask for help with collision mesh that is being a bitch
Step 26: Look dumb because it was just a simple error
Step 27: Finish map and realize it looks like crap
Step 28: Reconsider life because you are still working on GunZ
