FluentMigrator migration succeeds, but no changes to DB

After some investigation and testing with both version 0.8 and 1.0, it appears this is a bug in FluentMigrator.Net related to the migration runner's transaction management - if you run a migration with a specific version number, the transaction's commit never gets called; if you don't specify a version number, it's fine.

EDIT:

I have since submitted a patch to the project which was accepted. This is no longer a problem.

This sounds really stupid, but I wasted several hours on it, so it belongs here:

Make sure your migration classes use public visibility.

Without this, your migrations will be completely ignored.