I added new database columns in 1.0.2 for block sub types. However, there was no code to add these new columns to older databases, only to create them from nothing. If you added the new plugin without deleting the database, every block break/place would result in a NullPointerException.
This update adds these columns when there is an exception in the BlockTrack and BlockHistory tables. When using this version of the plugin, only one more error should occur, then it should work as intended.