My little brother cant play modded minecraft with me, help please

[4aron4 0]

Recently I put together a few mods for me and my brother to do a playthrough with. but now all of a sudden every time he tries to launch Minecraft it crashes on the forge loading screen. (find the crash log here.)

 

I really want to play with him but I cant get anything to work. I've tried deleting and reinstalling Minecraft, I've tried launching with no mods at all, uninstalling and reinstalling java 8, justt about everything i can think of and nothing will work. thanks for any replies in advance!

[diesieben07 7687]

There is an outdated version of Optifine installed that is not even listed on their website anymore.

Please also refer to the Optifine downloads page regarding compatibility with Forge, you have a Forge version that is not their stated compatible version for the 1.15.2 Optifine version that is still listed on their website.

[4aron4 0]

The version is actually listed on their website, if you go to the (preview versions) section, i suppose it could be causing issues. I'll remove it and get back to you

 

[diesieben07 7687]

The log shows preview_OptiFine_1.15.2_HD_U_G5_pre1. They list OptiFine HD U G5 pre2 as the only 1.15.2 version available.