With the latest Appery version I have these problems while opening my projects for editing.
Under Chrome ( 40.0.2214.115) Chromebook I get the error "Oops! Error occurred while loading application".
Under Chrome (v 40.0) in Linux ubuntu 14.04 Appery is stuck at the project list page. If I open any project then the browser switches few pages and goes back to project list page without reporting any error.
Firefox works correctly in Linux Ubuntu 14.04.
Thanks
R