Hello,
I recently downloaded the module (for Moodle 2.1) and I noticed there are a few translations with mistakes in the placeholders.
In Italian, the strings "pageof" and "numberfloat" had the wrong placeholders. Instead of
{$a->page}
they had
{$a}->page
which wouldn't be replaced with the page number.
I've seen the same mistake in Spanish and German.
I would suggest a check of all translations searching for
{a}->
Thanks for reporting this bug, Paolo. I have fixed it for fr, es, de and it languages in Moodle 2.0, 2.1 and 2.2. Bug CONTRIB-3274.
Joseph