[mythtv-users] No channels in db, but mythfilldatabase says "Data is already present"

[mikepolniak]

The mythfrontend complains that "You don't have any channels defined in
the database"....but when i run mythfilldatabase it won't update the
channels because it says "Data is already present for ...these days..."

Short of dropping the mysql 'mythconverg' database, how do i get mythfilldatabase to 
re-populate the db ?