The crash of doom !
Back up your sierra\swat4\content\system\user.ini and sierra\swat4\contentexpansion\system\user.ini files if you like your keybinds and custom controls.
Go to Add & Remove programs (via control centre if necessary). Uninstall all mods, maps, skins, e.t.c. you may have listed for SWAT4/SWAT4:TSS. Uninstall SWAT4:TSS, check the box to remove the entire directory, uninstall SWAT4, check the box to remove the entire directory.
reboot your computer
kill all non windows processes possible, my system tray was clear save for my volume setting icon, total proc was 26.
// Start log
Run game, tested training mission, hit excape, abort, quit, 'yes' to quit to
windows. Note: That the game took a VERY long time to start up as it did it's
first run chores. Very long for a 3.0Ghz/2GB system.
insert SWAT4:TSS Disk 1
Launch SWAT4 (the origenal game), test training mission, hit escape, abort, quit, 'yes' to quit to
Thats what I did and it seems to be working fine.
Now I just have to fix ravenshield....