Awesome mod, we love your work, thanks for all your hard work.
We are trying to upgrade our modpack and keeps crashing with:

java.lang.NullPointerException: Registry Object not present: silentgear:custom_tipped_upgrade

Full crash log here.

Using either :
SilentGear-1.15.2-1.8.1+108.jar or SilentGear-1.15.2-1.8.2+109.jar
(works fine with SilentGear-1.15.2-1.8.2+107.jar)
Forge: 31.2.30

Full modpack information here.

You would post this right after I merged a bunch of experimental changes into the main branch XD

I'm not sure why this happens, but I think one of the changes I made recently will prevent the crash, at the cost of breaking item colors. It seems like some other mod is responsible for this somehow. The only way I could see this crashing is if somehow the color handlers event is being fired before items are registered, which Forge allegedly fixed a while ago.

Anyway, I uploaded an alpha build here. If you can identify what mod is causing this, please update me.