Game stops: "unknown object type serialised by server"

I get the same crash and message when i try to enter my elreon daily.

I got the same "unknown object type serialized by sever" error, but only while doing the Lab. Happened in Merciless as well as in the Uber Lab.

2016/09/30 13:36:57 703020421 75c [DEBUG Client 6812] Got Instance Details from login server
2016/09/30 13:36:57 703020421 778 [INFO Client 6812] Just before calling client instance session
2016/09/30 13:36:57 703020421 cd [INFO Client 6812] Connecting to instance server at 146.0.225.167:6112
2016/09/30 13:36:57 703020453 111 [DEBUG Client 6812] Connect time to instance server was 16ms
2016/09/30 13:36:57 703020734 6d [INFO Client 6812] Tile hash: 1526796166
2016/09/30 13:36:57 703020734 6e [INFO Client 6812] Doodad hash: 3348297872
2016/09/30 13:36:58 703021359 903 [DEBUG Client 6812] Entering area EndGame_Labyrinth_boss_2

Got it while entering Cruel Lab room with the golden key.

2016/09/30 13:49:39 248908453 75c [DEBUG Client 10900] Got Instance Details from login server
2016/09/30 13:49:39 248908453 778 [INFO Client 10900] Just before calling client instance session
2016/09/30 13:49:39 248908453 cd [INFO Client 10900] Connecting to instance server at 146.0.225.167:6112
2016/09/30 13:49:39 248908484 111 [DEBUG Client 10900] Connect time to instance server was 31ms
2016/09/30 13:49:39 248908968 6d [INFO Client 10900] Tile hash: 1993590013
2016/09/30 13:49:39 248908968 6e [INFO Client 10900] Doodad hash: 754476329

Also crashes for me all the time

2016/09/30 13:57:28 1358966218 75c [DEBUG Client 7324] Got Instance Details from login server
2016/09/30 13:57:28 1358966218 778 [INFO Client 7324] Just before calling client instance session
2016/09/30 13:57:28 1358966218 cd [INFO Client 7324] Connecting to instance server at 169.47.1.24:6112
2016/09/30 13:57:28 1358966343 111 [DEBUG Client 7324] Connect time to instance server was 110ms
2016/09/30 13:57:28 1358966484 6d [INFO Client 7324] Tile hash: 3059100706
2016/09/30 13:57:28 1358966484 6e [INFO Client 7324] Doodad hash: 0
2016/09/30 13:57:29 1358967265 903 [DEBUG Client 7324] Entering area 3_4_town
2016/09/30 13:57:33 1358971640 75c [DEBUG Client 7324] Got Instance Details from login server
2016/09/30 13:57:33 1358971640 778 [INFO Client 7324] Just before calling client instance session
2016/09/30 13:57:33 1358971640 cd [INFO Client 7324] Connecting to instance server at 146.0.234.226:6112
2016/09/30 13:57:33 1358971671 111 [DEBUG Client 7324] Connect time to instance server was 16ms
2016/09/30 13:57:33 1358971703 6d [INFO Client 7324] Tile hash: 1837449126
2016/09/30 13:57:33 1358971703 6e [INFO Client 7324] Doodad hash: 0
2016/09/30 13:57:34 1358972359 903 [DEBUG Client 7324] Entering area Hideout8_3
2016/09/30 13:57:36 1358974500 75c [DEBUG Client 7324] Got Instance Details from login server
2016/09/30 13:57:36 1358974656 778 [INFO Client 7324] Just before calling client instance session
2016/09/30 13:57:36 1358974656 cd [INFO Client 7324] Connecting to instance server at 146.0.225.167:6112
2016/09/30 13:57:36 1358974671 111 [DEBUG Client 7324] Connect time to instance server was 15ms
2016/09/30 13:57:37 1358975031 6d [INFO Client 7324] Tile hash: 3542928265
2016/09/30 13:57:37 1358975031 6e [INFO Client 7324] Doodad hash: 3422646535
2016/09/30 13:57:37 1358975484 903 [DEBUG Client 7324] Entering area MapAtlasQuarry

I've received this error in multiple areas already. Creating a new instance seems to bypass this issue but never the less I've already lost one of my EHC characters to this "feature".
My guess is that it has to do with background streaming since it seems to happen only once I enter new area.

Same crash for me. In Slum sewers:

2016/09/30 13:58:25 632511250 75c [DEBUG Client 6812] Got Instance Details from login server
2016/09/30 13:58:25 632511250 778 [INFO Client 6812] Just before calling client instance session
2016/09/30 13:58:25 632511250 cd [INFO Client 6812] Connecting to instance server at 146.0.225.167:6112
2016/09/30 13:58:25 632511265 111 [DEBUG Client 6812] Connect time to instance server was 15ms
2016/09/30 13:58:25 632511734 6d [INFO Client 6812] Tile hash: 2528272146
2016/09/30 13:58:25 632511734 6e [INFO Client 6812] Doodad hash: 1820704539

I got the same "unknown object type serialized by sever" error.
It happens when i put a flame totem. The las time it was in The submerged passage in normal mode. The server was Frankfurt (EU).

The screenshot :


I have loose HC character today because of this...

The log related :

I've just run into this error, too - bug #2.266.988.572. Game and instance were fine until I released an essence monster in merciless Mud Flats (while logged in via Frankfurt gateway). With the UI option "Engine Multithreading" enabled, the client just hangs (window no longer responding). After disabling it, I got the "Unknown object serialized by server" error message.

I'm pretty sure the problem is connected to that specific essence mob, as I could re-enter the instance just fine - I just reproducibly ran into the problem again when approaching the monsters's location.

"

2016/09/30 14:33:05 512003796 cd [INFO Client 7600] Connecting to instance server at 146.0.225.167:6112
2016/09/30 14:33:05 512003843 111 [DEBUG Client 7600] Connect time to instance server was 32ms
2016/09/30 14:33:05 512004031 6d [INFO Client 7600] Tile hash: 2223173106
2016/09/30 14:33:05 512004031 6e [INFO Client 7600] Doodad hash: 3891169792
2016/09/30 14:33:06 512004734 903 [DEBUG Client 7600] Entering area 3_1_3

Regards, NiteHawk

2016/09/30 14:38:45 24996960 cd [INFO Client 9456] Connecting to instance server at 146.0.225.167:6112
2016/09/30 14:38:45 24996991 111 [DEBUG Client 9456] Connect time to instance server was 31ms
2016/09/30 14:38:45 24997428 52 [WARN Client 9456] FMOD Failed to load bank FMOD/Desktop/_Effects_Environment_Lights_Inca.bank with error code 18
2016/09/30 14:38:45 24997662 6d [INFO Client 9456] Tile hash: 3761777998
2016/09/30 14:38:45 24997662 6e [INFO Client 9456] Doodad hash: 2492787617
2016/09/30 14:38:46 24998286 6aa [DEBUG Client 9456] Joined guild named Killsteal-Legends with 13 members
2016/09/30 14:38:46 24998505 903 [DEBUG Client 9456] Entering area MapAtlasPier

It looks like this problem only occurs on the Frankfurt realm (and maybe Paris). Changing the realm to a US one should be a workaround.