Problem with hashtables

I’m using Photon and I need to make a hashtable for the customproperties for the room but get these errors.

Assets/Scripts/MultyPlayer/newMulty.cs(132,39): error CS1502: The best overloaded method match for `PhotonNetwork.CreateRoom(string, bool, bool, int, ExitGames.Client.Photon.Hashtable, string[])' has some invalid arguments

Assets/Scripts/MultyPlayer/newMulty.cs(132,39): error CS1503: Argument `#5' cannot convert `System.Collections.Hashtable' expression to type `ExitGames.Client.Photon.Hashtable'

Well, the error itself is self-explanatory: The CreateRoom method is expecting an ExitGames.Client.Photon.Hashtable but you are passing in a System.Collections.Hashtable. It could be that you’ve upgraded Photon without first deleting the previous version, so you might have old and new files of Photon mixed together. Try deleting the Photon folder and re-importing it and see if that doesn’t clear the error. Other than that you’d have to go into more detail and change the type of hashtable that you are passing in to the method.

using Hashtable = ExitGames.Client.Photon.Hashtable;

;D