Tried equipping the Ebony Flowsuit and crashed immediately. Got a crash report from VanillaFix; https://paste.dimdev.org/etuwejuwup.mccrash

Using latest version of PSI, Autoreglib and Psideas
I was in creative and tried shift clicking the helmet into my head slot, if that helps.

Gonna guess this is from the recent update to PSI actually. Good luck working on this, it seems very interesting and I look forward using the Ebony Flowsuit!