Regular backups is the only way to be sure that you don't lose stuff, not only for TB, but for computers in general.
However, errors in the message base can be cured with other measures too. Errors in the index file can be cured by creating a new index file, simply by deleting the messages.tbn file corresponding with the problem folder (preferreably with TB closed) Problems with the actual message base file fopr a folder can be cured by copying all messages in that folder to a new folder and afterwards deleting the messages.tbb file corresponding with the problem folder. (again preferrably with TB closed) Especially in the latter case this method can do better (though not necessarily) than the mintenance method that bigg one describes.
__________________________________ I'm just a user of The Bat! I don't work for Ritlabs.