Index: branches/5.0.x/core/install/install_schema.sql
===================================================================
diff -u -N -r12639 -r12641
--- branches/5.0.x/core/install/install_schema.sql	(.../install_schema.sql)	(revision 12639)
+++ branches/5.0.x/core/install/install_schema.sql	(.../install_schema.sql)	(revision 12641)
@@ -330,7 +330,7 @@
   `Status` int(11) NOT NULL DEFAULT '1',
   GroupList varchar(255) DEFAULT NULL,
   tz int(11) DEFAULT NULL,
-  BrowserSignature varchar(32) NOT NULL,
+  BrowserSignature varchar(32) NOT NULL DEFAULT '',
   PRIMARY KEY (SessionKey),
   KEY UserId (PortalUserId),
   KEY LastAccessed (LastAccessed),
@@ -413,7 +413,7 @@
   PopItem int(11) NOT NULL DEFAULT '2',
   Modified int(11) NOT NULL DEFAULT '0',
   ModifiedById int(11) NOT NULL DEFAULT '0',
-  CachedTemplate varchar(255) NOT NULL,
+  CachedTemplate varchar(255) NOT NULL DEFAULT '',
   Template varchar(255) NOT NULL DEFAULT '#inherit#',
   UseExternalUrl tinyint(3) unsigned NOT NULL DEFAULT '0',
   ExternalUrl varchar(255) NOT NULL DEFAULT '',
@@ -437,7 +437,7 @@
   FormId int(11) DEFAULT NULL,
   FormSubmittedTemplate varchar(255) DEFAULT NULL,
   FriendlyURL varchar(255) NOT NULL DEFAULT '',
-  ThemeId int(10) unsigned NOT NULL,
+  ThemeId int(10) unsigned NOT NULL DEFAULT '0',
   PRIMARY KEY (CategoryId),
   UNIQUE KEY ResourceId (ResourceId),
   KEY ParentId (ParentId),