[1.7.10] Client won't start (Crash log included)

[Fuegofandango]

So my friends and I made a modded pack on the Technic launcher. After updating a few mods, I found I could no longer launch the client. It would immediately go back to the launcher after trying to start.

 

Here's the crash log: http://pastebin.com/tKnaHFKY

[Choonster]

Caused by: java.lang.ClassFormatError: Duplicate method name&signature in class file net/minecraft/client/gui/inventory/GuiContainer

 

One of your coremods is adding a duplicate method (probably

func_146977_a

/

drawSlot

) to the

GuiContainer

class using ASM. See if you can narrow down which mod (or combination of mods) is causing it and report it to the author(s). AE2 and ChickenBones' mods (CodeChickenLib, CodeChickenCore, NEI) seem to be the most likely causes based on the log.

 

Make sure you're using the latest available version of every mod before reporting the issue.

 

To narrow down the cause, you can perform a binary search:

[*]Disable half your mods

[*]If the problem persists, it's caused by an enabled mod; so disable half of the currently enabled mods

[*]If the problem goes away, it's caused by a disabled mod; so disable the currently enabled mods and enable the other half

[*]Repeat until you find the cause

[Fuegofandango]

Thank you. It's Applied Energistics is causing the issue. I'll see what I can do about it.