problems with translations

I’m still testing wp and foo gallery and the translation to arabic is working just fine in wp but not in foogallery.

I created ar_JO.po and translated “back to album” into arabic but still showing it in english

when you create anew alum it asks to translate “back to gallery” and I did that but still in english.

you can see it at the website I’m testing
jameelat.4arabs.com