Hello,
this bug happends with the newest Thermal versions.
It occures at EVERY machine block, like Pulverizer, IE squeezer, AE blocks and and and

1.12.2-forge1.12.2-14.23.3.2676
theoneprobe-1.12-1.4.22
topaddons-1.12.2-1.5.0
ThermalFoundation-1.12.2-2.4.1.15-universal
ThermalExpansion-1.12.2-5.4.2.25-universal
ThermalDynamics-1.12.2-2.4.1.9-universal
CoFHCore-1.12.2-4.4.1.12-universal
mcjtylib-1.12-2.6.7

Very nice, I was just about to report this issue. Are you planning on publishing this fix to curseforge in the near future by any chance?

I uploaded it a few hours ago, just waiting for approval.

Wow, you move quickly lol. Thanks for the response.

V1.12.2-1.6.0 has been approved

Thx

Thanks for the report, will fix asap.

Np, I asked KingLemming also, because I didn't know if its a bug from his side or your side.
He wrote back with following:

"Some classes got refactored internally. TOPAddons will have to update.

Not really a bug on either end, just a consequence of them directly referring to some of my classes and then those classes being moved around."

And so I knew, I am at the right position here. :)