This is a collection of solutions to some of the more frequent issues. If any of the solutions don't work, comment below and I will try to help you.

Payload May Not be Larger Than [...] Bytes / Invalid Player Data
-> Install XL Packets Fabric (for Fabric) or XL Packets (for Forge). Also try Connectivity, Extra Thicc Packets or Packet Doubler if issues still persist

All Keybinds Set to Primary
-> Install Origins (Forge) 1.5.0.6 (or newer)

getting concurrentmodificationexception with latest 1.18.2 forge 40.1.74 but not on 40.1.73

I am still getting Invalid Player Data even after installing all of the Mods listed Above.

@SnowfallLP Are you using Fabric or Forge (and what Minecraft version)?

I am using 1.19.2 Forge

Try deleting the config file and seeing if that helps

What is it called? I can only find a File named "origins-common.toml" and if i delete that i still get the Error.

That’s the config file. I don’t know what else you can do to fix the issue of you’ve done all that.

As far as I can tell, the error is caused by the way Origins (Forge) handles addons, so if packet expanding mods don’t work, I don’t know what else to suggest

Interesting, I am having inconsistent results with using each of the packet mods listed above and deleting the config. I’m leaning towards an other than Origins++ mod conflicting with the packet limit mods or a problem on 1.19.2 in general when you are running an excessive amount of mods like the ATM8 modpack .

Origins++ works completely fine when alone (with all dependencies on 1.19.2), so these issues seem to be coming from an unknown source.