Color window disapears after closing Harmony.

Hello.
I am just starting to learn how to use Harmony 12.2 on an iMac 10.11.1 OSX El Capitan.
I am finding that when I close Harmony, and then re-open it, the colour panel disapears. I have no idea what causes this. I have tried it several times, and each time I re-open Harmony, the Colour panel has disappeared - everything else is there, except the colour panel. Can anyone offer any advice about this problem?

Thanks.

Hi!

If you go to the Preferences panel, is the Automatically Save Workspace preference disabled?

http://docs.toonboom.com/help/harmony-12-2/premium/preferences-guide/general-tab-preferences.html

Thanks!

Marie-Eve