The first time an album is displayed after an application restart, GSP checks the data schema version and runs the SQL upgrade script if necessary. No user intervention required, and the script is embedded in the TIS.GSP.Data.SqlServer dll.
You can execute it manually if you want (probably too late for you now). Just this morning I added a note to the Admin Guide about where to find this SQL script. Look at page 14.
The dll version is automatically incremented each time you compile from the source. You have the same code that is in the compiled 2.3.3456 version.
Roger Martin
Creator and Lead Developer of Gallery Server Pro