Thank you kindly, Patnad, for a patch that:

This is to handle the changes in the v1.23 viewer 
of LL regarding the adult rating. With this patch 
a region can be changed to the adult rating from 
LL viewer v1.23 and above.

OpenSim/Data/MySQL/Resources/002_GridStore.sql

@@ -0,0 +1,5 @@
+BEGIN;
+
+ALTER TABLE regions add column access integer unsigned default 1;
+
+COMMIT;