While create a new subsite within a site collection (from the browser),
I get this error:
The url 'Pages/default.aspx' is invalid. it may refer to a nonexistent file or folder or refer to a valid file
I checked the ULS log and the only error I see is this:
System.Data.SqlClient.SqlException (0x80131904): Parameter '@tp_Version' was supplied multiple times. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at System.Data.SqlClient.SqlDataReader.TryHasMoreRows(Boolean& moreRows) at System.Data.SqlClient.SqlDataReader.TryReadInternal(Boolean setTimeout, Boolean& more) at System.Data.SqlClient.SqlDataRea... dc1f0b9d-a674-f04b-99fb-97d2ef8fc076