Hello! I am a part of a Minecraft server that we recently updated from 1.20 to 1.20.1! All of the mods appear to be working, but the moment any of us attempt to add Optifine, the game crashes with the following crash log:
The game crashed whilst initializing game
Error: net.minecraftforge.fml.ModLoadingException: Doggy Talents Next (doggytalents) encountered an error during the common_setup event phase
Exit Code: -1

I've tried using Rubidium/Oculus in place of optifine, but they also crash with minimal information and an "Exit Code: 1".
I would assume that it's on my end, but it's been consistent for 10+ users attempting to use this mod.
In 1.20, I was aware that optifine was partially incompatible with the mod, as I couldn't see any of the modded dogs while it was installed to my client.
Is there any way around this?

Could you send us the full log ? And which DTN version are you using ? Since the latest 1.20.1 build in my side seems to work fine with Optifine.

Could you send us the full log ? And which DTN version are you using ?

All of us are using Forge 47.3.0, and the version of the mod we're using is DoggyTalentsNext-1.20.1-1.18.32, and the optifine version installed is Optifine_1.20.1_HD_U_I6

Here is the log:
crash-2024-10-04_03.30.00-client.txt

I don't know if this helps, but this is what my launcher says after it crashes

Uh if you follow down the path it is not quite DTN fault and it seems most likely another mod which cause the error but DTN happened to be involved. Morever it involves mixin which DTN Forge doesn't use as of now. Coukd you try only with DTN?

Uh if you follow down the path it is not quite DTN fault and it seems most likely another mod which cause the error but DTN happened to be involved. Morever it involves mixin which DTN Forge doesn't use as of now. Coukd you try only with DTN?

The game works and launches without optifine, which is why I think it's a compatibility issue between them - Is this fixable though?

DTN and Optifine launched fine in 1.20, but the modded dogs were invisible also

The dog are invisible? Could you sent a screenshot?

The dog are invisible? Could you sent a screenshot?

I was experiencing this before we updated the server, and I unfortunately do not have a screenshot of it :(
It wasn't just that they were invisible, it was like they didn't exist at all. I couldn't click or interact with them, but I didn't see it as much of an issue at the time because I hadn't started using the features in the mod yet. When I launched the old profile and loaded into a creative world to test it with those versions, they didn't disappear like they did previously, so it's either fixed, or it was specific to dogs with a special variant belonging to someone else while also existing alongside Optifine. I know I've had several visual glitches like that with other things, so it's likely that it was Optifine.
I've created a separate profile in the Curseforge launcher, and I removed the DTN mods we had, and the game would crash the same way with a new mod every time I removed a mod that crashed it. I do wonder if it's a compatibility issue in the launcher, because the most recent version pops up in the Curseforge launcher as "project-963443" after I put it into the mods folder.

I don't think that this is an issue or bug with this mod now that i've looked into it a bit more, so I will see what I can do regarding it being an Optifine Issue.
Thank you so so much for your help, I really appreciate you and everything you've done!