Exception: Unable to deserialize packet with pid 3

I'm having the same issue, though I've just begun Act 3 and haven't made it to the sewers yet. Also, my PID error is 1, not 3.

Interestingly enough, my wife is playing beside me and she has yet to crash. I'm considering copying her installation folder over in the event it's a corrupt or missing file. If that works, I'll post an update here.

Happened to me in the Crematorium but still "Act 3" as always.

im experiencing this now, act3 in sewers

yeah, i got this twice in a row in the Sewers on cruel.

this never happened during normal and it usually happens about 2-3 mins in the sewers, it is quite annoying.

i did the PackCheck but it showed nothing, just.

Checking pack file content.ggpk...

it it's like it didnt even finish because after that like 4 mins later it showed the directory and i could start the packcheck again.

can we get some info on this stupid as hell bug? its more annoying than server crashes.

Happens to me all the time during Act 3, specifically the sewers zone as others have mentioned.

This is a game-breaking bug. It took me 5-6 hours just to beat ACT 3 because I had to restart the client every 5 minutes.

Please fix or at least respond.

Same error. Seems common on Act3 Sewers.

Just happened in Market Sewers about 5 times in the past 30 minutes.

Still getting this error, about 6 times today..no fix found.

GGG pls......

first time game has crashed for me and got this error

Getting this error :( "unable to deserialise packet with pid 1" happened ~4 times so far tonight :\