Thanks for the help with this! (Your project sounds awesome and way beyond me, btw!)
Here is something I tried, but I don't think it is working.
Here is the entire creature file as it is now, which is not working properly. (It has horns and claws, but they barely dent skin on goblins.)
*** Error(s) finalizing the creature GARGOYLE
GARGOYLE:FEMALE:thumb, right hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:thumb, left hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:first finger, right hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:first finger, left hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:second finger, right hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:second finger, left hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:third finger, right hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:third finger, left hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:fourth finger, right hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:fourth finger, left hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:first toe, right foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:first toe, left foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:second toe, right foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:second toe, left foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:third toe, right foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:third toe, left foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:fourth toe, right foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:fourth toe, left foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:fifth toe, right foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:fifth toe, left foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:FEMALE:right horn, layer 1: Tissue HORN was not found, using first tissue instead
GARGOYLE:FEMALE:left horn, layer 1: Tissue HORN was not found, using first tissue instead
GARGOYLE:MALE:thumb, right hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:thumb, left hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:first finger, right hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:first finger, left hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:second finger, right hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:second finger, left hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:third finger, right hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:third finger, left hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:fourth finger, right hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:fourth finger, left hand, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:first toe, right foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:first toe, left foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:second toe, right foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:second toe, left foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:third toe, right foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:third toe, left foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:fourth toe, right foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:fourth toe, left foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:fifth toe, right foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:fifth toe, left foot, layer 1: Tissue CLAW was not found, using first tissue instead
GARGOYLE:MALE:right horn, layer 1: Tissue HORN was not found, using first tissue instead
GARGOYLE:MALE:left horn, layer 1: Tissue HORN was not found, using first tissue instead
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
Unrecognized Color Token: 1
So I've gotten a CLAW tissue confused somewhere...