Why is this happening?
The Server disconnected before login is an issue where one of the apps (Daylite or Daylite Server Admin) is out of date. This issue affects Daylite 4 and will likely affect Daylite 5.
How do I fix this?
You'll need to download & install the latest version for the out of date version of the appropriate application.
(i.e. if you have updated Daylite, make sure you also update Daylite Server. Or if you have updated Daylite Server, make sure you also update the Daylite app.)
*The latest versions of Daylite 5 can be found here.
**The latest versions of Daylite 4 can be found here