I tested for several days and there are some problems with WordPress 3.7.x
The Event Calendar plugin is not compatible with all the "related posts" plugins, such as YARPP, Zemanta, more...
If The Event Calendar plugin and one of the "related posts" plugin are both enabled there are some issues in dashboard :
- Posts menù ---> blank page
- Pages menù ---> blank page
- Events menù ---> blank page
All other menus are ok and the site is visible.