Hi there!
I ran into an error while using CE 2014 last year. The navigator window could not show, and there was an error message saying " Could not create the view: Argument not valid". I updated it to CE 2014.1 last month and the problem is still there. I tried to refresh the workspace, switch workspace to another folder, but it didn't work. I would appreciate it if you could provide some suggestion of solutions!
Best regards,
Leilei