Hi,
your current version is quite old.
Here a short overview of Designer versions.
8.x = ES (bundled to Acrobat 8)
9.x = ES2 (bundled to Acrobat 9)
10.x = ES3 (bundled to Acrobat X) (formely named ADEP before renamed back to LC)
11.x = ES4 (stand-alone)