Versions:

• Forge: 2732
• CompatLayer (only if on Minecraft 1.10 or 1.11):
• McJtyLib: 3.0.2
• RFTools: 7.55

https://pastebin.com/neqjKcWL

We are aware of this and currently our theory is that this is a bug in NEI which has a thread that causes the gui to be used wrong.

@McJty thanks for the quick reply. So.. what shall I do? Downgrade the mod to 7.54?
I remember I submitted a similr issue back in 7.20

Hey btw, it was working before until I updated
Chisel & Bits
CrayFish Furniture
Waystones

Downgrading will not fix it. The bug is in NEI. Not in our mods

But I didn't update NEI. It used to work until I updated the above mods
Do you guys have an issue reference in NEI?

Can you try temporarily removing NEI to confirm that it works right without it?

The problem is it works again now.... It sometimes don't work and sometimes work
Without changing anything :(

yes, that's the symptom which we also experienced. Without NEI it should work all the time. With NEI it works sometimes

@McJty but there are some features in NEI that is necessary to me

Yes but nothing we can do from our side. Perhaps report to NEI while referring to this ticket

Don't exactly understand why and how this could be NEI.. It's completely ASM free and works purely on events now, and only item panel refreshes are done on a separate thread and that is completely separate from what ever gui you have open.

Your other thread is the problem. It's accessing one of our GUIs when it shouldn't be and is calling methods on it too early.

The "Caused by" in this crash makes the problem more clear: https://pastebin.com/WPywMf2p

I have a fix for this, Feel free to close this.

Thanks @covers1624 !

Np!, Just waiting on some feedback for builds of my other mods, after that it'll be out. next day or so.