Strange behavior of Node words 6.x-1.3-beta5

1. "Global keywords" as are set up in "Content management > Meta tags > settings" are not appear at all in HTML.
- Checked in Metatags to show on edit forms: "Description", "Keywords".
- Checked in Metatags to output in HTML: "Description", "Keywords".
- Checked in Advanced options: "Enable the user profile meta tags", "Repeat meta tags for lists, Use front page meta tags", "Always show the meta tags fieldset as collapsed", "Include the attribute ALT of images in the description meta tag created from the node teaser".
- Template used: Zen.
- Cache cleared.
2. Description as it set up in Global settings with the same settings do not appear at all in HTML.
3. Description as it set up in pages do not appear at all in HTML.
4. BUT Dublin Core description (meta name="dc.description" in HTML) if is checked in "Metatags to output in HTML" shows entered "normal" description apart if is "normal" description checked or not.

Uninstalled Node words - rebuilded cache - installed Node words again - switched cache off... The same results.

After 6 hours I gave up. Some tips, please?