Can't get SCS to fully install for BG1 EE

I've tried the auto installer and clicking on the manual .exe Windows 7, clean install. Most of the mods install but it leaves a bunch out (mostly the AI and fight tweaks) which is what i wanted the most.

Sys_error("setup-stratagems: No such file or directory")
is the very first error. Then some mods go in, then some didn't go.

please help!