EasySocial - Won't retrieve list of languages

Hi,
Just installed EasySocial.
When trying to install a new language I go to the "languages" option.
I get the message "Retrieving list of languages..." as I got with EasyBlog and EasyDiscuss, which I already installed. However I won't get any languages listed for EasySocial. Get the message displayed permanently instead. Nothing happens, unlike with Blog and Discuss.

Any idea what may be happening?

Thanks in advance for your reply.

Regards,
Juan