ClassiCube

When I open up my launcher it works [I use wine]. Everything is okay. When I try to play multiplayer it crashers my launcher. Can anyone Help?

My Version of OSX Yosemite: 10.10.5

Java Version: 7

Crash Report:\/\/\/

=== crash occurred === Time: 3/26/2016 5:40:01 PM System.InvalidCastException: Cannot cast from source type to destination type. at Launcher.LauncherScreen.MakeBooleanAt (Anchor horAnchor, Anchor verAnchor, System.Drawing.Font font, Boolean initValue, Int32 width, Int32 height, Int32 x, Int32 y, ClassicalSharp.Action`2 onClick) [0x00000] in <filename unknown>:0 at Launcher.MainScreen.MakeSSLSkipValidationBoolean () [0x00000] in <filename unknown>:0 at Launcher.MainScreen.DisplayWebException (System.Net.WebException ex, System.String action) [0x00000] in <filename unknown>:0 at Launcher.MainScreen.Tick () [0x00000] in <filename unknown>:0 at Launcher.LauncherWindow.Run () [0x00000] in <filename unknown>:0 at Launcher.Program.Main (System.String[] args) [0x00000] in <filename unknown>:0