well ppl, mac os x is able to make a zip - just right click (or ctrl+click) at a file/folder and choose Create archive of 'yourfile'. but it makes a pure zip with the .DS_Store, forks, etc
and so i came with the CleanArchiver.
if youve got your map in pk3 you dont need no sv_pure 0.
AKAnotu - have you dragged all the folders at once? (maps, scripts, etc)
cuz CleanArchiver wont ask for the name of the archive, if ull drag only one folder like maps it will make maps.zip...
and btw - i had an older version, just tried this one and works well too - so those werent first two options
anyway - exclude .DS_Store, exclude ._*, exclude icon file should be checked, and save resource fork should be unchecked - if youre not able to simply do it you will need to choose another archive type, like bzip2, then come back to zip. should be left unchecked. then drag all the map folders (maps, scripts, levelshots, textures, env, sound etc) that are being used by the map. ofc save as yourmap.pk3 (not yourmap.zip), then put to your base folder and go on (devmap yourmap)
should work...