Virtuemart Redirects To Homepage After Login Problem- Please help

[Jessica28]

Hello guys,
Please help with the following problem.
Our store works in English however we have problem in French. (Virtuemart 2.0.20b and Joomla 2.5.9)

When user browse the site in French and adds product to the cart there is no problem UP UNTIL he gets to login or register page, if he chooses to login [problem 1]-  virtuemart redirects him to homepage English version !
and if he chooses to register [problem 2] it redirects him to http://www.domain.com/en/panier/checkout.html instead of /fr/

Please note that I don't use any translation plugins but only the core with VM also not any SEO addons... just the one from VM (enabled) - btw I tested with disabled and it's the same.

I have spend hours searching for solution and some tips on this forum, hopefully someone can help!

Thank you all!

[Jessica28]

guys please some help... the website is up an running with this major bug...