probably as lava said (btw
http://www.redsaurus.net/gtkrwiki/index.php/Common_Problems)
then u can try compilin without the monitoring (Edit -> Preferences -> Settings -> Build -> Enable Build Process Monitoring (uncheck) ) tho u wont see how is it goin in the MacRadiant console.
is your firewall on and blockin 39000 port? (System Preferences -> Sharing -> Firewall -> Stop)
reopening radiant?
or try terminal compiling
q3map2 is stored in /Applications/MacRadiant15.app/Contents/Resources/sw/radiant15/q3map2.ppc (PPC version)
open textedit
so for compilin your map stored in your /Users/yourname/.trem/base/maps/ folder, named yourmap.map, you can type
exec /Applications/MacRadiant15.app/Contents/Resources/sw/radiant15/q3map2.ppc -meta "/Users/yourname/.trem/base/maps/yourmap.map"
exec /Applications/MacRadiant15.app/Contents/Resources/sw/radiant15/q3map2.ppc -vis -saveprt "/Users/yourname/.trem/base/maps/yourmap.map"
exec /Applications/MacRadiant15.app/Contents/Resources/sw/radiant15/q3map2.ppc -light -fast -filter -super 2 "/Users/yourname/.trem/base/maps/yourmap.map"
save it as eg. yourmap_compile.sh (for eg. on your Desktop)
open terminal (/Applications/Utilities/Terminal)
cd /Desktop
./yourmap_compile
IIRC it went this way
hope it helps ;s ive got few macs and i can compile with the menu without any probs
there was a simpler way...