Can't change category name

Hi All,

I am not able change the category name in my shop where I have English and Hungarian languages installed.
Whenever I change the category name and hit save, the name fields in Hun and Eng both get cleared and I get an error message that I should att a name. When I add the name again, the same happens. I am not sure if it is an extension, but the error log says the following:

2014-12-14 0:41:32 - PHP Notice: Undefined index: name in /home2/mcjavar/public_html/vqmod/vqcache/vq2-admin_view_template_catalog_category_form.tpl on line 30

Line 30 in the above mentioned file look likes:

<td><input type="text" id="_description_<?php echo $language['language_id']; ?>" name="information_description[<?php echo $language['language_id']; ?>][name]" size="100" value="<?php echo isset($category_description[$language['language_id']]) ? $category_description[$language['language_id']]['name'] : ''; ?>" />


any idea?