So I load up my custom zombies map, I named it Nazi_zombie_fuckthis because I couldnt manage to get ANY of my maps to load and this is the last time I'm gonna try to make a map, anyways, when I load it up, it says
"Server script compile error
unknown function
(see console for details)"
So I went to check the console, only to see it says "error: could not find material loadscreen_nazi_zombie_fuckthis"
I've had this error MANY times, and I'm fed up of it.
I'm using GCZ script placer 2.0.1, not gonna use the UGX script placer because it hates me.
Please help.

"Unknown function" and "cant load material" are 2 different errors.
You might need to load your map with "developer 1" and "devmap mapname" to see the name of the function or the script thats calling it.
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If its a new script placer map compiled correctly without any custom stuff added it should load without any errors.