So, together with the dresser mod and the invalid parts packages for both mods, I've been going through CAS and ctrl-right clicking to blacklist parts I don't want appearing. This is working for clothes and hairs but not makeup (or tattoos) - Right clicking won't even being up the part's debug information, it just responds as if I'm left-clicking to select the part. Anyone know why this might be happening? The right clicking not working means I can't even get the part's debug info to do it manually.

I haven't come across this particular issue and am therefore not sure what might be causing it but have you read our Blacklisting guide yet? It may be simpler and easier to use the Easy CASP Editor program, providing you are still on patch 1.67 or below.

I have read the guide - and clothes and hairs are going fine. Unfortunately I'm at 1.69 due to origin.