Had 5.1.2 installed the other day and I am getting an error.

When I try to update site settings as admin i get:

"An error has occurred.
Error: Site Settings is currently unavailable."

When I try to update setting as host i get:

"Error: is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: Cannot insert the value NULL into column 'DefaultLanguage', table 'bluefathom_c_iug4.dbo.Portals'; column does not allow nulls. UPDATE fails. The statement has been terminated. ---> System.Data.SqlClient.SqlException: Cannot insert the value NULL into column 'DefaultLanguage', table 'bluefathom_c_iug4.dbo.Portals'; column does not allow nulls. UPDATE fails. The statement has been terminated. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteNonQuery(SqlConnection connection, CommandType commandType, String commandText, SqlParameter[] commandParameters) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteNonQuery(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteNonQuery(String connectionString, String spName, Object[] parameterValues) at DotNetNuke.Data.SqlDataProvider.UpdatePortalInfo(Int32 PortalId, String PortalName, String LogoFile, String FooterText, DateTime ExpiryDate, Int32 UserRegistration, Int32 BannerAdvertising, String Currency, Int32 AdministratorId, Double HostFee, Double HostSpace, Int32 PageQuota, Int32 UserQuota, String PaymentProcessor, String ProcessorUserId, String ProcessorPassword, String Description, String KeyWords, String BackgroundFile, Int32 SiteLogHistory, Int32 SplashTabId, Int32 HomeTabId, Int32 LoginTabId, Int32 UserTabId, String DefaultLanguage, Int32 TimeZoneOffset, String HomeDirectory, Int32 lastModifiedByUserID) at DotNetNuke.Entities.Portals.PortalController.UpdatePortalInfo(Int32 PortalId, String PortalName, String LogoFile, String FooterText, DateTime ExpiryDate, Int32 UserRegistration, Int32 BannerAdvertising, String Currency, Int32 AdministratorId, Double HostFee, Double HostSpace, Int32 PageQuota, Int32 UserQuota, String PaymentProcessor, String ProcessorUserId, String ProcessorPassword, String Description, String KeyWords, String BackgroundFile, Int32 SiteLogHistory, Int32 SplashTabId, Int32 HomeTabId, Int32 LoginTabId, Int32 UserTabId, String DefaultLanguage, Int32 TimeZoneOffset, String HomeDirectory) at DotNetNuke.Modules.Admin.Portals.SiteSettings.cmdUpdate_Click(Object sender, EventArgs e) --- End of inner exception stack trace ---"

What is going on?

Support at host says:

"I could not reproduce the mentioned error. It could be caused by weak network connection. Please try login on another pc in a different network and please let us know if you still get the above error"

my other host says this...

"There is a known issue with DNN 5.1.2 installations which will cause the error "Cannot insert the value null into column 'default language'" to be displayed when attempting to complete some functions. There is a work around which may rectify this issue. To apply this work around you need to add the languages module to a page in your site and modify its settings. We recommend adding the languages module to your site settings. To do so follow the steps below.

1. Login to your DNN site as the host or admin user, navigate to "admin" --> "site settings", then from the DNN control panel choose to add the "languages" module to the "content pane" and insert it in the "bottom".

2. Once the module is placed in your site settings, navigate to the languages section at the bottom of the page and choose "edit language" from the available locales section.

3. Then choose a language in the "language" and "fallback language" drop down options, select the "enabled" box (check should be displayed) and then choose "update".