error virtuemat insert product

Hello to all

Excuseme, but i don't speack english

The template continues to have more problems, someone is able to solve and to help me?

I installed and everything went ok.

I installed the files of the Italian language, but after using them on, all products virtuemart disappear from the site is that the panel ammiistrazione.
If I enter a new product, I get this error:

VMerror: vmTable loadTable 'utcrkgdd_frattina.b4f0o_virtuemart_vendors_it_it' does not exist SQL = SELECT `` b4f0o_virtuemart_vendors_it_it. *, `` b4f0o_virtuemart_vendors. * FROM `JOIN` b4f0o_virtuemart_vendors_it_it b4f0o_virtuemart_vendors using (virtuemart_vendor_id ``) WHERE b4f0o_virtuemart_vendors_it_it. virtuemart_vendor_id `` = "1"

View the image.

Thank you

Help me .....please ....