how do i fix the 400 fx limit

Search the forum, this has been asked and answered tens of times.

how do i fix the 400 fx limit

This may be some help to you http://ugx-mods.com/forum/index.php?topic=2493.0

Alot of the time when looking for help with issues such as this have already been answered or fixed. Next time check out this thread for help http://ugx-mods.com/forum/index.php?board=10.0 good luck with fixing your problem

i tried all the tuts but can't seem to get it to work

would be helpful if you can say when you reach the error.
add an single FX or a weapon to the map?

when i add a weapon

do you tried to remove un-used FX's in mapname.csv?
open it up and just comment the FX out you dont need
like this..

fx,maps/mp_maps/fx_mp_light_glow_indoor_short_loop

//fx,maps/mp_maps/fx_mp_light_glow_indoor_short_loop

which weapon do you try to add?

i did that

and a bunch of bo 2 weapons

like:
blundergat
peacekeeper
m27
pdw
msmc
m1927

if you add so many weapons, would be better to remove some of the stock waw-guns.
just comment then out in dlc3.csv..
to make sure, you can also remove they from _zombiemode_weapons.gsc and dlc3_code.gsc.. and delete the weapon-files from it.

make sure you backup the dlc3.csv!

and dont forgot to recompile your fastfiles and build your mod

got rid of 6 weapons but still the error

try to remove some more weapons.
and put the new one in mapname.csv, not in mod.csv. (the "weapon,sp/" lines) and remove it from mod.csv.
recompile fastfiles and build mod, then try again..

IF everything doesnt work after that just try going into root/raw/fx and delete some you dont use! but make sure you have a backup before you do (p.s backup the thing your gunna edit before you do! just to be safe!)