Unknown object type serialized by server

same. switching server didnt help

I had the same issue. Happened some 3-5 times but I was always able to log in.

Now I went to the town, stood for a while. And as soon as I clicked a skill gem upgrade in my skill menu, I got booted out with this error again. But this time I'm unable to login and will get this error. I am standing in Clearfell if it matters, but the bug started as soon as I clicked the upgrade button on skill.

i also got this error, multiple times, after i portaled out of the witches hut to refrsh my flasks and sell some loot. been spending most of my time in game trying to get to not stutter, really wish theyd figure out how to optimize this game soon.

same

I got the same error right after I used the portal (the first time) to go back to the Clearfell Encampment. I was just walking out of the portal then the game crashed and froze with "Unknown object type serialized by server" as a windows popup.

Edit: upon trying to play the same character again, the game will *not* let me login. It crashes upon clicking "Play"

same... :(

Fix this please!

same...nicely done

Same ...

2025/04/04 13:59:08 ***** LOG FILE OPENING *****
2025/04/04 13:59:08 875718250 84b53090 [INFO Client 37460] [JOB] Irrecoverable Exception Callback: SET
2025/04/04 13:59:08 875718250 44e5269a [INFO Client 37460] [CMD][Unrecognized] --ex-crash-report
2025/04/04 13:59:08 875718250 a1e2d655 [INFO Client 37460] [HTTP2] User agent: PoE poe2_production/tags/4.2.0 Windows x64
2025/04/04 13:59:08 875718250 a1e2d656 [INFO Client 37460] [HTTP2] Using backend: cURL
2025/04/04 13:59:08 875718343 a91f0bd1 [INFO Client 37460] Send patching protocol version 7

...

2025/04/04 14:12:13 876502953 93b1b552 [CRIT Client 34460] [RENDER] Shader uses incorrect vertex layout (shader: 0x00000008 mesh: 0x00000000)
Signature: "Metadata/EngineGraphs/base.fxgraph" "Metadata/EngineGraphs/disable_lighting.fxgraph" "Metadata/EngineGraphs/GpuTrails/trail_default.fxgraph" "Metadata/EngineGraphs/trail_uv_fixed.fxgraph" "Metadata/Effects/Graphs/General/ForceAdditive.fxgraph" "Metadata/Effects/Graphs/General/BasicColourLod.fxgraph" "Metadata/Effects/Graphs/Personal/Javier/UV.fxgraph" "Metadata/Effects/Graphs/General/SoftAlphaParticle.fxgraph" "Metadata/Effects/Graphs/General/HDR.fxgraph" "Metadata/Effects/Graphs/Personal/Javier/color_Vibrance.fxgraph" "Metadata/Effects/Graphs/Personal/Javier/add_Scroll_byAlbedo.fxgraph" "Metadata/Effects/Graphs/General/MuddleTex.fxgraph"

... Continues ...

I'm guessing it is computer/driver configuration vs. some MTX causing the crashes. Seems to be when in Clearfell, and those getting it multiple times in a row keep logging back into the same instances and triggers the crash again.