Invalid Cast Exception when joining room

[thejimone]

Hello,
I've been workin gwith MFPS recently and everything worked perfectly when testing with bots! When I started testing with actual multiplayer a problem occured... The one that tries to join a room gets an error... Any help is appreciated... Thank you!

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InvalidCastException: Specified cast is not valid.
bl_WaitingRoom.OnEventCustom (ExitGames.Client.Photon.EventData data) (at Assets/MFPS/Scripts/Network/Waiting Room/bl_WaitingRoom.cs:164)
Photon.Realtime.LoadBalancingClient.OnEvent (ExitGames.Client.Photon.EventData photonEvent) (at Assets/Photon/PhotonRealtime/Code/LoadBalancingClient.cs:3215)
ExitGames.Client.Photon.PeerBase.DeserializeMessageAndCallback (ExitGames.Client.Photon.StreamBuffer stream) (at <93d7bfaf6a774f5fac24d79468df113d>:0)
ExitGames.Client.Photon.EnetPeer.DispatchIncomingCommands () (at <93d7bfaf6a774f5fac24d79468df113d>:0)
ExitGames.Client.Photon.PhotonPeer.DispatchIncomingCommands () (at <93d7bfaf6a774f5fac24d79468df113d>:0)
Photon.Pun.PhotonHandler.Dispatch () (at Assets/Photon/PhotonUnityNetworking/Code/PhotonHandler.cs:223)
Photon.Pun.PhotonHandler.FixedUpdate () (at Assets/Photon/PhotonUnityNetworking/Code/PhotonHandler.cs:149)

[Lovatto]

Hi,

Seems like you have made some changes in bl_WaitingRoom.cs,
send me your MFPS purchase number and a PM and post here the line 164 of your bl_WaitingRoom.cs script after.

[thejimone]

This is line 164:

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HashTable t = (HashTable)data.CustomData;

[Lovatto]

Try changing that line with:

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ExitGames.Client.Photon.Hashtable t = (ExitGames.Client.Photon.Hashtable)data.CustomData;

if it doesn't work, send me your bl_WaitingRoom.cs script in a PM.

[Lovatto]

I check your code, I din't found any sustancial difference, but still I was not able to replicate the issue,
so I'll need a little more information from your side.

- First, enumerate the steps that you do before the error appears.
- Add this line:

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  Debug.Log($"Parameter type: {data.CustomData.GetType()} - {data.CustomData is ExitGames.Client.Photon.Hashtable}");

After these lines: (start at line 163 in your script).

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public void OnEventCustom(EventData data)
    {
    

And after you test, check the console and try to find the log "Parameter type: ..." and post it here.

[Lovatto]

I was able to replicated the issue with the latest version of Photon PUN,
You can fix it by adding this line:

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if (data.CustomData == null) return;

Right after these lines: (hint-line 160)

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public void OnEventCustom(EventData data)
    {

[thejimone]

Thank you so much for your help! It kinda works... The error still pops up but at least now the game is playable!