?
We've seen this error pop-up a few times, mostly if the ReleaseNumberScheme was altered on the table directly. This script will get fixed in a future release... but in the mean time...
One fix is to purge the offending application or releases causing the problem. To purge releases, you need to use the method Releases_PurgeReleaseData.
Of course, that may not be possible, so you can bypass this update script with this:
DELETE [__BuildMaster_DbSchemaChanges] WHERE [Script_Id] = 612
INSERT INTO [__BuildMaster_DbSchemaChanges]
SELECT '406239826673664', 612, 1, '10-RELNO. UPDATE Sortable Release Numbers v2', GETDATE(), 'N' UNION ALL
SELECT '406239826673664', 612, 2, '10-RELNO. UPDATE Sortable Release Numbers v2', GETDATE(), 'N' UNION ALL
SELECT '406239826673664', 612, 3, '10-RELNO. UPDATE Sortable Release Numbers v2', GETDATE(), 'N'
hope that helps