Language error after moving server

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Hi everyone,

I have just moved a site to a new server and everything works fine except the following strange error. Just in case I am running ZC 1.38

Now the site is multilingual with English and Greek available. I can go to the English version and everything shows fine without any problem. When I change over to the default Greek language though then I get all things like BOX_HEADING_CATEGORIES,CATEGORIES_BOX_HEADING_SPECIALS etc. It is like the system can not find the Greek language files.

I have uploaded the files three different times as well as tried previous backups of the language files but nothing no change. I have tried the same files on a different server (local) and everything is fine.

Just in case the product categories, products etc everything shows up fine so it is not the db.

What am I missing? Any ideas will be appreciated.

If you want to see for yourself the site is at http://www.youcube.gr/index.php (sorry needs the index.php in the end

Tassos