Creating or loading into a world causes a white screen and stops responding, minecraft 1.2.3, no mods

System Information

MultiMC version:
0.6.11-1430

Operating System:
Windows 10 Pro N 64bits

Summary of the issue or suggestion:

Whenever I create or load into a world in minecraft 1.2.3 with forge installed, it displays the message 'saving chunks' and shows a white screen, it doesn't start responding and has to be killed.

What should happen:

load into a world without errors

Steps to reproduce the issue:

1. Create a new instance of minecraft release 1.2.3

2. Install forge 1.4.1.64

3. Launch the instance

4. Create a world or load into an existing one

Suspected cause:

Unknown

Logs/Screenshots:

Link to pastebin

Additional Info:

This doesn't happen because of mods how I originally expected, it seems to occur only after forge is installed.

[AverageComet250]

Two things:

1. Why are you playing 1.2.3 and

2. It says that you stopped the instance, not an error.

Two things:

1. Why are you playing 1.2.3 and
2. It says that you stopped the instance, not an error.

1. I want to play 1.2.3 because that is the version of minecraft the old YogBox was built on, I've gotten nostalgic lately so I wanted to get it running on MultiMC

2. It doesn't crash, it just throws a white screen and stops responding, only thing I can do is to kill it as it doesn't even have the windows "this program is not responding" popup that closes the software

[AverageComet250]

Someone got it onto 1.7.3, so try their version of the modpack

https://yogscast.fandom.com/wiki/YogBox

Scroll down to the videos part (the link will be in the description)

Also, does this happen with the official launcher or not? (With or without mods)

[phit]

the error points at you missing modloader, i was able to reproduce this behavior locally, looks like the forge installation is messed up

[phit]

yep, fixed by adding this to the minecraft.jar via multimc

https://mcarchive.net/mods/modloader?gvsn=1.2.3

select minecraft in the version tab and then click "add to minecraft.jar", then select that zip file you can get from the link

yep, fixed by adding this to the minecraft.jar via multimc

https://mcarchive.net/mods/modloader?gvsn=1.2.3

select minecraft in the version tab and then click "add to minecraft.jar", then select that zip file you can get from the link

Thank you very much!