Translation Error

I made the Czech translation of the control. When I uploaded it to the server I got a message:

THERE WAS A PROBLE RETRIEVING THE LANGUAGE FILE:

INTERNAL SERVER ERROR (ERROR 500)

This is the code:
    <GleamTech:FileVistaControl ID="FileVistaControl" runat="server" 
                                Style="width: 800px; height: 600px" 
                                Language="cz" 
                                UploadTempFolder="" 
                                LicenseKey="k0r64Bq87NBWuEcj1wWW9QxDXQa2A+lf2R+KGZM="
                                Debug="false">

and the file is cz.xml located in the FVC/Languages

Any suggestions?
Stanislav

There may be a syntax error in the xml file you created, please send me the file via email so that I can find out the reason of the load error.