I have the same errors with my map. So I got all the files of the nazi_zombie_verruckt_example and put everything in its place and still come up with the same console log errors.
Map crashes while the letters are spinning, just before click to start mission.

******* script runtime error *******
unknown item 'zombie_melee': (file 'maps/_zombiemode_weapons.gsc', line 75)
PrecacheItem( "zombie_melee" );
*
Error: called from:
(file 'maps/_zombiemode_weapons.gsc', line 7)
init_weapons();
*
Error: called from:
(file 'maps/_zombiemode.gsc', line 44)
maps\_zombiemode_weapons::init();
*
Error: called from:
(file 'maps/nazi_zombie_ver_ex.gsc', line 48)
maps\_zombiemode::main();
*
Error: started from:
(file 'maps/nazi_zombie_ver_ex.gsc', line 15)
main()
*
Error: ************************************
Database: Assets Sync Started
Database: Assets Sync Finished
dvar set cl_paused 0
dvar set long_blocking_call 0
dvar set sv_network_warning 0
dvar set cl_network_warning 0
dvar set loc_language 0
dvar set loc_forceEnglish 0
dvar set language english
dvar set com_errorTitle Error
dvar set com_errorMessage script runtime error
(see console for details)
unknown item 'zombie_melee'
********************
ERROR: script runtime error
(see console for details)
unknown item 'zombie_melee'
********************
dvar set sv_disableClientConsole 0
PROFILES: setting server info to 0.0.0.0:0
Couldn't get profiles instance, are we logged on?
----- Server Shutdown -----

edited on Jun. 2, 2009 02:57 pm by PoSSe

Hmm, that is a stalk script. Post your map's GSC so I can see if there is any issues with it. That error is saying the item "zombie_melee" does not exist so it can't precache it. The only thing I can think of is an issue in your map's GSC.

I got the example map from here:
Link

I have it working now. It was in the zone_source .csv file.
I had to unedit include,zombiemode from this:

// for zombie specific assets
// Moved to Mod.ff
//include,zombiemode


To this:

// for zombie specific assets
// Moved to Mod.ff
include,zombiemode