Plutonium

FutureRave The OP made this post prior to the update, but the update doesn't seem to have affected this particular bug.

I'm seeing exactly the same issue as you. Doesn't seem to have been resolved by today's update, unfortunately.
https://forum.plutonium.pw/topic/35598/unable-to-join-multiplayer-games-fatal-error

I built my own CLI tool that integrates with the Plutonium API, so I know which servers to try. I've filtered the list to only include r4035 servers, and even these ones are causing crashes. So, I don't think it has anything to do with outdated servers:

Still experiencing this issue. Even on the latest r4035 version of the launcher.

Dumps for anyone interested: https://www.dropbox.com/scl/fo/5ogjzfkl1uzbzowgza0pw/APWClUx0v4EKrYSw9FEXLmU?rlkey=j2s7asox5xzb2ljpn32j9697a&st=092cj4ql&dl=0

I was linked to this forum post by one of the staff, so I'm hoping it's a temporary issue that will get fixed soon. For now though, I just can't play.

https://forum.plutonium.pw/topic/35549/attempted-read-of-nullclassptr-in-plutonium-bootstrapper-win32/2

Same for me. Same error, seemingly out of nowhere, since a few days ago. Can't join any multiplayer servers for more than 30 seconds before crashing out. Uninstalled and re-installed several times. Verified game and system files. Updated drivers. Added as an exception to MS Antivirus. Nothing works

No problem. Thanks for letting me know!

Contents of the associated .txt file in the crashdumps folder:
Exception Code: 0xC0000005
Exception Address: 0x0054162C

I'm happy to DM someone my core/memory dump if needed. Don't feel comfortable posting publicly.

Also seeing this. Looks like a Plutonium bug. Looking forward to the fix!

Unable to join multiplayer games. It errors as soon as I get into the server.

I can't post the memory dump files, as it exceeds the maximum file size allowed...