RadRails database not displaying.

I get the following error when using the data perspective trying to display the development database.

"Unable to connect to connect to database, see log for more info."

I was wondering where the log could be found.

Also, my rails program is able to execute database queries and able to also write to the database, thus there shouldn't be a problem with the YML file. But when isn't the database being populated in the RadRails data perspective?