In a new script placer map the shadows work so you must have deleted/changed your skybox or lightgrid or worldspawn settings.
Make backup of your mods/mapname/
Merge clientscripts/ folder with your mods/mapname/
Check file in launcher/mod builder.
It should get rid of the footstep error.
Are you using ugxmod?
Did your map compile before?
gympie is probably correct and your calling a custom script with a flag_wait in it before the flag is defined. Moving it under zombiemode or load would ensure that the flag was defined.
It shouldn't be happening on a new script placer map.
That error comes from using a command like
flag_wait "all_players_connected" before
If you have developer 1, developer_script 1, and logfile it should tel...
Map_source contains prefabs and maps.
Mods/mapname/ contains custom scripts sounds ect.
Zone_source contains csv associated with your mapname.
Custom models and textures will need the gdt and original files associated with them.
Create a new map with a script placer...