Query failed : 
SELECT
  filter.taskid,
  filter.compid,
  filter.maxver,
  gal_compver.dk,
  gal_compon.name,
  gal_compon.tipUp,
  gal_compon.nameUP,
  gal_compon.productid,
  gal_compver.ver1,
  gal_compver.df
FROM (SELECT
    gal_compontask.taskid,
    gal_compver.compid,
    MAX(gal_compver.ver2) AS maxver
  FROM gal_compontask
    INNER JOIN gal_compver
      ON gal_compontask.compverid = gal_compver.id
  WHERE gal_compontask.taskid = '3740'
  GROUP BY gal_compontask.taskid,
           gal_compver.compid) filter
  INNER JOIN gal_compver
    ON filter.maxver = gal_compver.ver2
    AND filter.compid = gal_compver.compid
  INNER JOIN gal_compon
    ON gal_compver.compid = gal_compon.id