Issue description:

When I view some items in the Creative inventory or through JEI (namely anything built on ItemNetworkItem), my game crashes.

What happens:

Crash.

What you expected to happen:

Actually be able to use the mod.

Steps to reproduce:

1. Open the Creative inventory
2. Click the Refined Storage tab
3. Watch as your hopes and dreams come crashing down around you (pun intended)

Version (Make sure you are on the latest version before reporting):

• Minecraft: 1.10.2
• Forge: 12.18.2.2125
• Refined Storage: 1.2.4

Does this issue occur on a server? [yes/no]
Probably, though I'm finding it in singleplayer.

If a (crash)log is relevant for this issue, link it here:

https://gist.github.com/tripl3dogdare/ebc7c697548cdd72b9e8e24e24b44077

After following your advice and digging around for a while, it turns out I was using Extra Utilities and not Extra Utilities 2. No idea how a 1.8 mod even loaded at all on 1.10, but apparently it did. Thank you!

You have a bad RF api in some mod. Check if you have some old jar just sitting in there or try swapping out some mods. You could always install enderio, since they report the loaded RF api when something like this happens.

np, yeah the mod that provides the api doesn't even have to be loaded. Glad it worked out!