From
http://banshee-project.org/OnePointEx/BuildingAndRunning:
"This probably happened because we added or removed a column in a table in the database. This is common. We are not providing migration paths between database schema revisions until we make the first preview release.
"There is a tool inside the src/ directory called nuke-core-tables. This tool will reset your database. When you run Banshee 1.x again, tables from stable Banshee will be migrated to the new schema and Banshee should run again."