Jackmynt
Right in Radiant if you lokk under the ‘FILE’ tab top left and part way down this menu there is ‘PROJECT SETTINGS’ and in there you can set the base path to point at your clean install ie “C:/Program Files/A Clean Install/Wolfenstein - Enemy Territory/etmain/” (this is my path yours maybe different).
The problem you are having sounds like the old favourite that has been discussed many times before but for this once i won’t bitch and moan (you should try using the search button and the sticky threads at the top for help first if at all possible).
The problem could be down to the fact that you may not have put your maxcoords and mincoords in the worldspawn before you compiled your map.
With your map open in Radiant press ‘N’ to bring up the entities dialogue box, in the top panel select worldspawn. in the second panel it will show all the options that you can set key values for (fog, gravity etc), in there you will see there are 2 options called mapcoordsmins and mapcoordsmaxs and for these you need to put in the values for the extents of your map.
mapcoordsmins is the top left corner of your map (put in a value that is a little larger than your map extents)
mapcoordsmaxs is the bottom right corner of your map (put in a value that is a little larger than your map extents)
Then compile and test in your clean version of ET using sv_pure 0 and g_gametype 2.
I have been good to you and karma will repay my kindness.
Good luck
<DJ>