unknown object type serialized by server

got this in sea witches Quay on touching an essence monster. entering the map again always results in this crash

also got two client crashes caused by something else, which is two more than I got during last year. edit: got few more on entering map -> maps unplayable

Started getting unknown object type serialized by server error after patch after a couple of seconds using market waypoint.
Did not happen before patch 2.4.0h

Definitely a bad patch. I was mapping fine until I tried to open a Essence in Springs, which resulted in a perma freeze.. RIP lvl 89 char with 700-800c worth of stuff ;-;

This must be one of the new features GGG was talking about :^)

+1

Same here.
Started occuring first at about 11:45am CET(not sure here). usually shortly after entering a new Instance i.e. map, Kaoms dream, Daressos arena.

I lost my Char Essence hardcore :((((((

Happend to me on map Dunes.Did few other dunes map without problem now if i try to re-enter map i keep getting that error and my game freeze.Died as well so all progress lost.Thank you GGG.

Today I have strenght 100-500 latency spikes
-> I restarted Game
Still 100-500 but it was pretty playable

after hour when I went to Ledge - Unknown object type serealized by server
-> I restarted game
Latency 49

wtf? :D

Barrows Map - Frankfurt EU Gateway - 5 Minutes ago

Zana appeared - "Unknown Object Type Serialized by Server" - restarted Path of Exile.
Went into the Map again, I entered the Boss Room (Arena) - same Error occured!

Hope this helps