getlocations permission error

WD getlocations: Getlocations write error when saving the marker     [error]
configuration to sites/default/files/js/getlocations_markers.js.

Getlocations is unable to save the marker configuration, so the      [error]
markers will not work. Please check file system permissions of
sites/default/files/js/getlocations_markers.js!

drwxrwxr-x 2 www-data www-data  4096 2012-05-24 20:15 sites/default/files/js
-rw-rw-r-- 1 www-data www-data 93750 2012-05-24 20:24 sites/default/files/js/getlocations_markers.js