We download the GieEditor from GitHub.org, and it works fine.
Here attachment is our test video: https://ap.thinkgeo.com:5001/sharing/CjIro01JO(It's too big to upload to forum)
We can’t reproduce your problem, so we guess maybe you don’t have a valid license.
Could you give us more information in order to recreate your problem?
For example some exceptions or descriptions when you load layer.