Tried to right click on the cauldron with salis mundus and nothing happens. I know there is an option to disable the cauldron functionality, but that defeats the purpose of having both mods installed.

Note for anyone still playing on 1.12
If one still has issues stuck on the salis mundus cauldron conversion part of the thaumonomicons alchemy research.
go to configs, find S:extendCauldron=
and set it to "simple".

Never mind... I thought I had already gotten the research for it unlocked, but apparently clicking complete didn't take and I had to go back and re-do it. It works now and wasn't anything to do with Inspirations.