I also get 3 other errors in my dev console

Error: called from:
(file 'maps/_zombiemode.gsc', line 65

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Double Post Merge: April 10, 2016, 02:51:35 am

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)
maps\_zombiemode_perks::init();


(Accidentally pressed something and it sent post without me finishing it -_- )

Error: called from:
(file 'maps/_nazi_zombie_mapname.gsc', line 119)
maps\_zombiemode::main();

Error: called from:
(file 'maps/_nazi_zombie_mapname.gsc', line 9)
main()

No idea how I got any of these errors. Had no problem with these till I added terrain and compiled and built mod.

Add zombie_perk_bottle_doubletap (from root --> raw --> weapons --> sp) to your weapons folder in your mapname mod folder?