failed update? MC wont launch

hockey501

I updated my client and i cannot get the game to launch. i only get these error codes. anyone experience this?

Uncaught exception in thread "main"

java.lang.RuntimeException: Failed to read accessWidener file from mod wurst

at net.fabricmc.loader.impl.FabricLoaderImpl.loadAccessWideners(FabricLoaderImpl.java:514)

at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:149)

at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68)

at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)

Caused by: net.fabricmc.loader.impl.lib.accesswidener.AccessWidenerFormatException: line 1: Namespace (named) does not match current runtime namespace (intermediary)

at net.fabricmc.loader.impl.lib.accesswidener.AccessWidenerReader.error(AccessWidenerReader.java:285)

at net.fabricmc.loader.impl.lib.accesswidener.AccessWidenerReader.read(AccessWidenerReader.java:84)

at net.fabricmc.loader.impl.FabricLoaderImpl.loadAccessWideners(FabricLoaderImpl.java:512)

... 3 more

Alexander01998

Hey hockey501,

It looks like the issue with your game not launching is related to using an incorrect version of the Wurst Client designed for development purposes. The error message you're encountering indicates that there's a mismatch in the access widener's namespace ("named" vs "intermediary").

Make sure to download the standard version of the Wurst Client that does not include "dev" or "sources" in the file name. Those versions are meant for development and won't work in a typical Minecraft setup.

Once you do that, you should be good to go. Let me know if you face any other issues!

hockey501

Alexander01998

thank you that got it! dumb mistake on my end