OK, so it seems that the main problem cause of all this is "XML Too many open files"... And I have managed to fix this problem by simply deleting a large number of map files (.pk3) in my baseq3 folder. I just took a huge selection of maps (752 .pk3 files), copied them to a separate folder ...

Most programs (including GtkRadiant) do not have write permissions enabled to the Program Files folder as it is restricted by the OS. Have you tried installing the program to somewhere else instead of C:\Program Files\GtkRadiant? Try installing to C:\GtkRadiant Thanks for reply, yes it's installed ...

Hi I am having really strange problem with radiant 1.6.4, each time I try to even save new preferences or new map. Here http://imgur.com/0Sxccfp,FHl9bQt#0 is the error message when I try to change preferences. Here http://imgur.com/0Sxccfp,FHl9bQt#1 is the error message when I try to save a map. Doe...