2014-04-07 11:14:15,445 [TIA-WEB2SRV][Thread:8][FATAL] DotNetNuke.Web.Common.Internal.DotNetNukeHttpApplication - System.Data.SqlClient.SqlException (0x80131904): Violation of UNIQUE KEY constraint 'IX_PortalAlias'. Cannot insert duplicate key in object 'dbo.PortalAlias'.
The statement has been terminated.
   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.TryConsumeMetaData()
   at System.Data.SqlClient.SqlDataReader.get_MetaData()
   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, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
   at System.Data.SqlClient.SqlCommand.ExecuteScalar()
   at PetaPoco.Database.ExecuteScalar[T](String sql, Object[] args)
   at DotNetNuke.Data.PetaPoco.PetaPocoHelper.ExecuteScalar[T](String connectionString, CommandType type, String sql, Object[] args)
   at DotNetNuke.Data.DataProvider.AddPortalAlias(Int32 PortalID, String HTTPAlias, String cultureCode, String skin, String browserType, Boolean isPrimary, Int32 createdByUserID)
   at DotNetNuke.Entities.Portals.Internal.PortalAliasControllerImpl.AddPortalAlias(PortalAliasInfo portalAlias)
   at DotNetNuke.Entities.Urls.AdvancedUrlRewriter.Handle404OrException(FriendlyUrlSettings settings, HttpContext context, Exception ex, UrlAction result, Boolean transfer, Boolean showDebug)
   at DotNetNuke.Entities.Urls.AdvancedUrlRewriter.ProcessRequest(HttpContext context, Uri requestUri, Boolean useFriendlyUrls, UrlAction result, FriendlyUrlSettings settings, Boolean allowSettingsChange, Guid parentTraceId)
   at DotNetNuke.Entities.Urls.AdvancedUrlRewriter.RewriteUrl(Object sender, EventArgs e)
   at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
ClientConnectionId:c9c6f16e-e4b8-4b5f-9e80-c54dbc3e54c4
2014-04-07 11:15:17,877 [TIA-WEB2SRV][Thread:14][ERROR] DotNetNuke.Services.FileSystem.FileEventHandlersContainer - Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
   at DotNetNuke.ExtensionPoints.ExtensionPointManager.get_MefCompositionContainer()
   at DotNetNuke.ExtensionPoints.ExtensionPointManager.ComposeParts(Object[] attributeParts)
   at DotNetNuke.Services.FileSystem.FileEventHandlersContainer..ctor()
2014-04-07 16:17:57,494 [TIA-WEB2SRV][Thread:8][FATAL] DotNetNuke.Web.Common.Internal.DotNetNukeHttpApplication - System.Web.HttpException (0x80004005): A potentially dangerous Request.Path value was detected from the client (:).
   at System.Web.HttpRequest.ValidateInputIfRequiredByConfig()
   at System.Web.HttpApplication.PipelineStepManager.ValidateHelper(HttpContext context)