The error was raised when I selected to filter posts by a range of time, . It says it was not possible to convert a string to datetime.
DotNetNuke.Services.Exceptions.PageLoadException: Error de sintaxis al convertir una cadena de caracteres a datetime. ---> System.Data.SqlClient.SqlException: Error de sintaxis al convertir una cadena de caracteres a datetime. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(SqlConnection connection, SqlTransaction transaction, CommandType commandType, String commandText, SqlParameter[] commandParameters, SqlConnectionOwnership connectionOwnership) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, String spName, Object[] parameterValues) at DotNetNuke.Modules.Forum.SqlDataProvider.ThreadGetAll(Int32 ForumID, Int32 UserID, Int32 PageSize, Int32 PageIndex, String Filter) at DotNetNuke.Modules.Forum.ThreadController.ThreadGetAll(Int32 ForumId, Int32 UserID, Int32 PageSize, Int32 PageIndex, String Filter) at DotNetNuke.Modules.Forum.Threads.OnPreRender() at DotNetNuke.Modules.Forum.ForumBaseControl.OnPreRender(EventArgs e) at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Page.ProcessRequestMain() --- End of inner exception stack trace ---