SCS on Mac Error - Please Help

Hello,

I'm trying to install SCS on Mac:

Mac OS 10.12.5
BG II version 2.3.67.3 (GoG version)
SCS version 30 for OS X

I opened my BG II package and copied the unzipped SCS into the Resources folder. I then copied Mac Weidu Launcher into the Resources folder.

Ran Mac Weidu Launcher, made my install selections (Spell tweaks Y; Item tweaks N; Gameplay tweaks Y; Cosmetic Y; AI Y; Tactial BG1 N; Tactical BG2 Y)

It appears to install, copies files to override folder, then delets them, and I get the following message:

Copying and patching 2873 files ...

Including and running function(s) detectcloud
Copying and patching 1 file ...

SFO: Cloning SPL file(s) %CLERIC_STORM_OF_VENGEANCE% => dw#vstor
%WIZARD_INCENDIARY_CLOUD% => dw#trpin
%WIZARD_METEOR_SWARM% => dw#trpms and applying patch(es)...

ERROR Installing [Initialise mod (all other components require this)], rolling back to previous state
Will uninstall 36 files for [STRATAGEMS/SETUP-STRATAGEMS.TP2] component 1000.
Uninstalled 36 files for [STRATAGEMS/SETUP-STRATAGEMS.TP2] component 1000.
ERROR: Failure("resource [%CLERIC_STORM_OF_VENGEANCE%.SPL] not found for 'COPY'")

The override folder is then empty.

I'm not very good with the Mac OS terminal. Am I doing something wrong? Is the GoG version just wonky with mods? Can someone help me get this fixed?

Thank you for your consideration.