Trying to run in 1.18.1. Fabric is working on its own. Optifabric is working but comes up with the error saying optifine jar isn't there. I download optifine 1.18.1 and put it in the mods folder and the game won't load. Please help!

Have you got FabricAPI installed as well?

Do you have any other mods

Have you got FabricAPI installed as well?

No, I didn't think I needed it? I will go download it and see if it makes a difference

Have you got FabricAPI installed as well?

I've done that and now it's in a loop of loading. With the red background and mojang studios. No other mods at the moment, want replay mod but need this working first

i'm having the same issue

i'm having the same issue

Hi, I found out that optifine H5 doesn't work (is not compatible), use 1.18.1 H4

Using H4 worked for me too-- thank you!

The game crashed whilst rendering overlay
Error: java.lang.RuntimeException: Mixin transformation of net.optifine.CustomColors failed
Exit Code: -1073740791

Using H4 worked for me too-- thank you!

Close this issue now.

You can also check #630 for the latest current testing version of Optifabric, although expect mod compatibility to change as support is added for more.

try using the latest version of OptiFabric