Hmmmmm... It looks like your problem might be being cause by a transformer function that has previously failed. Basically, the game uses transformers to literally rewrite Minecraft's code. Think of these functions like a courier service. Let's say you buy a package from FedEX. They put your package in their big ol' trucks and send 'em off. However, let's say that this truck suddenly gets stopped to be searched, e.g. the transformer editing the package (the code). The guy searching the truck finds your package and he goes, "Hey, man, this package is a bit strange so we gotta' change it a bit, here-" and he opens up the package, removes a few things, adds a few things, and finally puts the package back in the truck and sends it off. When you get your package (again, the code), it will be changed by the man who searched the truck (again, the transformer). Everything went alright, HOORAY! Now, let's say this man searching your truck runs into a bit of an issue while modifying your package, and he... gets struck by and asteroid or something, idk. Because he failed so catastrophically, you will NEVER get your package, so the truck will just have to drive off without your package. Now let's say we have another guy on the track this time that wants to search the truck, and let's say he's looking for that same package that the first guy messed up with. He goes into the truck, looks around a bit, and says, "wth, there ain't nothin' here man." Then he calls the police and says something like, "ClassMetadataNotFoundException." This could be what has happened here, although I'm not too positive. But basically, the entire package (the code needed to be modified) is GONE! But here's the thing, the exception shown in your crash report is NOT going to be the one that's actually of note, because the original guy didn't throw an exception. What you need is evidence of what failed to change the class beforehand. Here's what you can do. In your log file, try finding the point where the exception is initially thrown, then try scrolling up and see what's there. If you see anything of note, please report it here. If all else fails and nobody is able to help you here, then as a last resort you could post the log file, although I wouldn't exactly recommend this right off the bat, who knows what might be in there.
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Jackson Perr · 38 minutes ago 38 min
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