I looked thru the mapping tutorial, searched google and searched this forum. I didn't find any answer.
I have following Problem: If I texture something, it just doubles or halfs the textures I use. Dont know why. I better post some screenshots for illustration:
GTK Radiant:


And ingame (have tried with more then one compilation method... using Q3Map2Toolz)


It is pure luck that that one box has its textures not displaced... it would'nt work on the rotated one...
I'm not sure if the textures on wall and ceiling are changed too.
The small lightcubes (background of last pic) only look like they should because I made them look "wrong" in GTK... They wouldnt work aswell...
Its quite annoying
I use Gtk Radiant 1.5
Update: Netradiant does the same.
Edit: I use the compiler that came with netradiant and it works as intented. It seems Q3Map2Toolz is bugged!!! (exept for the mappacker)