Problem with different languages (Joomla 2.5.4)

Hi,
I downloaded today full installation version of this template and I noticed that it was also updated to version 2.5.4.
Well, I tryed to install different language packages and now I've got a problem:
in LANGUAGE MANAGER I can access normally "Installed-Site" and "Installed-Administrator" sections, but when I try to open "CONTENT" I obtain an error message (attacched).

I uninstalled VM components too, but the problem remains.
My intention is to activate multilanguage on my site, using 2.5.x native modality.

What can I do?
Thanks for replies.

TED

It looks your database structure does not correspond to Joomla version. Theer was known problems with missing columns and wrong table name poople solved by manually editing database.

www.hotjoomlatemplates.com/support-forum...uemart-problem#16942

www.hotjoomlatemplates.com/support-forum...d-languagepack#14140

Thank you.
I solved the problem by fixing the database in extension manager.
Now It works fine.