ruby2 error: "Error Opening Tables.Application closing down"

[John Richard Procter]

1. Check the file path of the shortcut and the database:
   ALSO SEE: Connecting a Ruby Supervisor to a Ruby Server
   
2. Firebird must be installed and running:
   ALSO SEE: "Error Opening Tables.Application closing down"
   
3. Win32 error 0 can also be a damaged database or harddrive.
   You can run a backup and restore to try and fix the database,
   else replace the harddrive and re-install RUBY.
   ALSO SEE: How to install RUBY from the internet