I was changing some settings in the theme settings (propulsion) and when I saved the settings I got this error:
The website encountered an error while retrieving http://www.ampersandphotography.eu/. It may be down for maintenance or configured incorrectly.
Here are some suggestions:
Reload this webpage later.
HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request.
From that point on my site was unavailable. I was able to get my site back up and running by changing the name of the theme-folder via FTP. I retried activating the theme but got the same problem, this was with propulsion and eunoia.
I restored my root to an earlier back-up and everything worked again ... until I tried to save some changes in the theme settings. I have never had this before with propulsion or corona and it is even with the new theme eunoia. So I am completely clueless at this point and would really like to start setting-up my site in the new theme.