MySQL error 23

Out of resources when opening file './YeTFaSCo_v1_02/ExView.frm' (Errcode: 24)

phpMyEdit error: invalid SQL query

SELECT `PMEtable0`.`yn` AS `qf0`,`PMEtable0`.`gn` AS `qf1`,`PMEtable0`.`motid` AS `qf2`,`PMEtable0`.`confidence` AS `qf3`,`PMEtable0`.`dubious` AS `qf4`,`PMEtable0`.`notes` AS `qf5` FROM `ExView` AS `PMEtable0` ORDER BY `PMEtable0`.`dubious`,`PMEtable0`.`confidence`,`PMEtable0`.`gn`,`PMEtable0`.`yn` DESC