I just managed to run the game, however the SkylordsRebornUpdater.exe file did not run when Wine was configured to use Windows 10. Setting it to Windows 7 solved the issue for me.
I have something similar. When I created a game and closed to the window back to the forge everything was okay. However it looked like two groups were merged together - resulting in 3 player group for 2 player map and when I tried opening the map window (via clicking the globe) following errors appeared:
Mind that client just look as if it froze. Those boxes were not to be seen until I have alt-tabbed.