You can download version 0.3.1 of the editor now of you follow this link:
https://www.dropbox.com/s/i1e896kd03yegzn/GaiaTheCreator%280.3.1%29.zip?dl=0
This version contains an output of error and event messages in the editor as well in a log file that is created with the project. I added some error handling so I hope it will be possible for me to find out why the editor is not working for some of you...
You can also see now the progress bar if you create a new project or open an existing project.
I will soon make an update for the upcoming features/new functionality.
Here are two screenshots that show the log output in the editor: