Issue description:

Updating to latest version causes client-side crash at start-up

What happens:

Client crashes

What you expected to happen:

Steps to reproduce:

1. Update to refinedstorage-1.4.12.jar
2. Start client
3. Crash
   ...

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

• Minecraft: 1.11.2
• Forge: forge-13.20.0.2315
• Refined Storage: refinedstorage-1.4.12.jar

Does this issue occur on a server? [yes/no]
No

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

[pastebin/gist/etc link here] https://gist.github.com/kwpugh/4711ff71a37bbde49e1b585149988593

That is weird. It doesn't look like a crash caused by RS.

RS doesn't even appear in the stacktrace.

It works fine for me (on a modpack with 57 mods):

Probably caused by some other (core)mod. Try re-setting up your environment and updating Forge.

It seems like an obfuscated - deobfuscated issue.

For the lay person, what does ob-deob mean? Any suggestions where to look next?

Is this a modpack you put together yourself? Are you using some client?