Issue Description:

We both use the same Java version (the latest). Now that I think of it, EnderIO never ran on his machine (he tried different modpacks in the past, even tried running the mod by itself)

What happens:

title

What you expected to happen:

Minecraft to run

Steps to reproduce:

1. Go to Technic Launcher
2. Download the modpack name "MWUCR"
3. Run the modpack and see if it crases or not
   ...

Affected Versions (Do not use "latest"):

• EnderIO: 5.1.55, but as I said this issue appears on older versions too
• EnderCore: 0.5.73, but as I said this issue appears on older versions too
• Minecraft: 1.12.2
• Forge: 1.12.2-14.23.5.2847
• SpongeForge? no
• Optifine? no
• Single Player

Your most recent log file where the issue was present:

https://pastebin.com/60jKWB04

#5259