I'm playing the Dawncraft modpack with my friend. We've been playing for about 2 hours, and suddenly the game crashes unexpectedly. When I enter the same world and he joins me, the server crashes as soon as he connects. I can only enter the game alone; if he joins, my game crashes. What could be causing this?

We've updated our drivers.

We're playing through Hamachi.

We don't have any antivirus software.

Firewall is disabled.

Java is up to date.

The Forge profile options are 40.2.17.

We've added some additional mods from the modpack, but regardless of which modpack we play, this issue always occurs. We've tried both Prominence and Dawncraft, and it happened in both.

Note that the game crashes and returns to the launcher screen, so sometimes I can't see the error names. Every time this error occurs, we lose the world and have to create a new one because he can't join while I'm in that world. As soon as we create a new world and play for a few hours, the game crashes again and the same thing happens.

Add the crash-report or latest.log (logs-folder) with sites like https://paste.ee/ and paste the link to it here

 

i tried to send an hour ago but it was blocking me for spam srry http s://past e.ee/p /3LxXL put all this together

 

 

https://paste.ee/p/3LxXL

Backup the world and make a test without REI

Alright, I've backed up and uninstalled both REI and REI compatibilities. Now I just have to wait for my friend to wake up to join my world and run the test. I'll reply here in case it goes wrong.

I did the test, backed up the world, placed it in the saves folder, replaced it with the previous world, and now when I'm entering the world, the game crashes and returns to the launcher. This is with REI and REI compatibilities uninstalled.

Add the new crash-report or log

I installed REI and REI compatibilities again, and the world opened. This time, I tried to delete only REI, and the game doesn't open.
https://paste.ee/p/1hiWQ

Error when I uninstalled both REI and REI compatibilities: https://paste.ee/p/29dvR

Add REI, keep REI compatibilities removed

sure

I deleted only REI compatibilities, the game runs, but when I enter the world, it doesn't load and crashes. https://paste.ee/p/J8aBR

Add this build of JEI

https://www.curseforge.com/minecraft/mc-mods/jei/files/4593548

add this JEI and remove both of REI?

I didn't delete REI, I just deleted REI compatibilities, and downloaded this JEI. The game and the world opened. Now, I'll do the test when my friend joins the world, and I'll reply here if it fails.

I joined the game with my friend, we were able to play for about 10 minutes, and suddenly the game crashed, leaving me this message: 'java.lang.IllegalStateException: Pose stack not empty'. I'll send the crash report.

https://paste.ee/p/7LWAs

Make a test without RubidiumExtra and Oculus

sure