I don't tend to use F-spot for an awful lot, but upon attempting to launch it recently I found that the computer would have a think, an ultimately take no action. Running the launch command from the terminal yielded the following error:
Unhandled Exception: Mono.Data.SqliteClient.SqliteSyntaxException: no such table: tags
As it turns out, the solution is simply to remove the config directory for F-spot. This can be achieved by running the following command in the terminal:
rm -rf .config/f-spotThen start the program over again, hopefully that has solved it!