Hi Gunu,
Thank you for the beta download.
It is my bad and not the plugin.
I did not add the he_IL.mo and he_IL.po to the \wp-content\languages\ (I only used the theme he_IL.mo and he_IL.po in \wp-content\themes\themeName)
Adding the additional main translation fixed the issue.
I hope this will help others and sorry for the trouble.
(I installed the beta and it works ok)
Thank you,
Yehuda