Client gets instantly kicked from server after connecting "ReceivePropertiesForRPC - Mismatch read" (logs included)

After hosting a server for a steam game, one client (same version as everybody else) gets instantly kicked after joining the server, because of:

Error: ReceivedRPC: ReceivePropertiesForRPC - Mismatch read. Function: TellSvPlantFire?
Error: UActorChannel::ProcessBunch: Replicator.ReceivedBunch failed.

I couldnt really find usefull information for these errors, anyone got a clue what these could mean? Image of the “TellSvPlantFire” function

Whole log
Log:


  [2018.01.15-19.47.12:766][346]LogNet: NotifyAcceptingConnection accepted from: 76561198072126949:7777
    [2018.01.15-19.47.12:766][346]LogHandshake: SendConnectChallenge. Timestamp: 83.450279, Cookie: 140178107117013245240213243167120235167155170067248138225085
    [2018.01.15-19.47.12:776][347]LogNet: NotifyAcceptingConnection accepted from: 76561198072126949:7777
    [2018.01.15-19.47.12:776][347]LogHandshake: SendConnectChallenge. Timestamp: 83.460602, Cookie: 208157046050252194113122157203201185085076060016212247212010
    [2018.01.15-19.47.12:777][347]LogNet: NotifyAcceptingConnection accepted from: 76561198072126949:7777
    [2018.01.15-19.47.12:777][347]LogHandshake: SendConnectChallenge. Timestamp: 83.460602, Cookie: 208157046050252194113122157203201185085076060016212247212010
    [2018.01.15-19.47.12:777][347]LogNet: NotifyAcceptingConnection accepted from: 76561198072126949:7777
    [2018.01.15-19.47.12:777][347]LogHandshake: SendConnectChallenge. Timestamp: 83.460602, Cookie: 208157046050252194113122157203201185085076060016212247212010
    [2018.01.15-19.47.12:777][347]LogNet: NotifyAcceptingConnection accepted from: 76561198072126949:7777
    [2018.01.15-19.47.12:777][347]LogHandshake: SendConnectChallenge. Timestamp: 83.460602, Cookie: 208157046050252194113122157203201185085076060016212247212010
    [2018.01.15-19.47.12:807][350]LogNet: NotifyAcceptingConnection accepted from: 76561198072126949:7777
    [2018.01.15-19.47.12:807][350]LogHandshake: SendChallengeAck. InCookie: 140178107117013245240213243167120235167155170067248138225085
    [2018.01.15-19.47.12:807][350]LogNet: Server accepting post-challenge connection from: 76561198072126949:7777
    [2018.01.15-19.47.12:807][350]PacketHandlerLog: Loaded PacketHandler component: Engine.EngineHandlerComponentFactory (StatelessConnectHandlerComponent)
    [2018.01.15-19.47.12:807][350]LogNet: NotifyAcceptedConnection: Name: PlayMap1, TimeStamp: 01/15/18 20:47:12, [UNetConnection] RemoteAddr: 76561198072126949:7777, Name: SteamNetConnection_5, Driver: GameNetDriver SteamNetDriver_4, IsServer: YES, PC: NULL, Owner: NULL
    [2018.01.15-19.47.12:807][350]LogNet: AddClientConnection: Added client connection: [UNetConnection] RemoteAddr: 76561198072126949:7777, Name: SteamNetConnection_5, Driver: GameNetDriver SteamNetDriver_4, IsServer: YES, PC: NULL, Owner: NULL
    [2018.01.15-19.47.12:817][351]LogHandshake: Received unexpected post-connect handshake packet - resending ack.
    [2018.01.15-19.47.12:817][351]LogHandshake: SendChallengeAck. InCookie: 140178107117013245240213243167120235167155170067248138225085
    [2018.01.15-19.47.12:817][351]LogHandshake: Received unexpected post-connect handshake packet - resending ack.
    [2018.01.15-19.47.12:817][351]LogHandshake: SendChallengeAck. InCookie: 140178107117013245240213243167120235167155170067248138225085
    [2018.01.15-19.47.12:817][351]LogHandshake: Received unexpected post-connect handshake packet - resending ack.
    [2018.01.15-19.47.12:817][351]LogHandshake: SendChallengeAck. InCookie: 140178107117013245240213243167120235167155170067248138225085
    [2018.01.15-19.47.12:817][351]LogHandshake: Received unexpected post-connect handshake packet - resending ack.
    [2018.01.15-19.47.12:817][351]LogHandshake: SendChallengeAck. InCookie: 140178107117013245240213243167120235167155170067248138225085
    [2018.01.15-19.47.12:839][353]LogNet: NotifyAcceptingChannel Control 0 server World /Game/HeistProps/Maps/PlayMap1.PlayMap1: Accepted
    [2018.01.15-19.47.12:839][353]LogNet: Remote platform little endian=1
    [2018.01.15-19.47.12:839][353]LogNet: This platform little endian=1
    [2018.01.15-19.47.12:880][357]LogNet: Login request: /Game/HeistProps/MainMenuMap?Name=Aratris userId: 76561198072126949
    [2018.01.15-19.47.12:913][360]LogNet: Client netspeed is 10000
    [2018.01.15-19.47.13:099][378]LogNet: Join request: /Game/HeistProps/MainMenuMap?Name=Aratris?SplitscreenCount=1
    [2018.01.15-19.47.13:104][378]LogNet: Join succeeded: Aratris
    [2018.01.15-19.47.13:268][393]LogNet: Error: ReceivedRPC: ReceivePropertiesForRPC - Mismatch read. Function: TellSvPlantFire?, Object: PlayerHeistChar_C /Game/HeistProps/Maps/PlayMap1.PlayMap1:PersistentLevel.PlayerHeistChar_C_2
    [2018.01.15-19.47.13:268][393]LogNet: Error: UActorChannel::ProcessBunch: Replicator.ReceivedBunch failed.  Closing connection. RepObj: PlayerHeistChar_C /Game/HeistProps/Maps/PlayMap1.PlayMap1:PersistentLevel.PlayerHeistChar_C_2, Channel: 3
    [2018.01.15-19.47.13:268][393]LogNet: UNetConnection::Close: [UNetConnection] RemoteAddr: 76561198072126949:7777, Name: SteamNetConnection_5, Driver: GameNetDriver SteamNetDriver_4, IsServer: YES, PC: MyPlayerController_C_2, Owner: MyPlayerController_C_2, Channels: 10, Time: 2018.01.15-19.47.13
    [2018.01.15-19.47.13:268][393]LogNet: UChannel::Close: Sending CloseBunch. ChIndex == 0. Name: [UChannel] ChIndex: 0, Closing: 0 [UNetConnection] RemoteAddr: 76561198072126949:7777, Name: SteamNetConnection_5, Driver: GameNetDriver SteamNetDriver_4, IsServer: YES, PC: MyPlayerController_C_2, Owner: MyPlayerController_C_2

This just happened to one player, he had every antivirus/firewall disabled, he even tried completely reinstalling the game, any ideas or experiences with this issue would really help!

I tried removing the function “TellSvPlantFire?” completely, but it the same error comes up with other functions…

The errors that come up are:

Error: FBitReader::SetOverflowed() called!

Error: ReadFieldHeaderAndPayload: Error reading numbits.

Error: Server received unwanted property value myVariable?

(see full logs: Log file open, 01/15/18 20:40:09LogWindows: Failed to load 'aqProf.dll' (GetLa - Pastebin.com)

There is literally nothing coming up when I search for these errors, so any input would be really appreciated!

I removed every single replicated function or variable that was mentioned, but the issue still appears on 9/10 connection attempts from users that have this issue. They disabled their firewalls/antivirus programs, and have a good and stable internet connection, I cant find anything on forums about these issues, so if you have an idea what could cause this please let me know!