Defined meta tags in "Other pages"-tab are ignored

I want to use robots-meta tag for some specified paths (e.g. node/6 or a panels page).
I read http://drupal.org/node/586470 and so I tried to use the "more generic support for custom pages" (like panel pages).

Here is in detail what I have done:

1. Meta Tags settings tab (admin/content/nodewords):
- "Meta tags to show on edit forms" -> checked "Robots"
- "Meta tags to output in HTML" -> checked "Robots"
- clicked "Save configuration"

2. Default and specific meta tags - Other pages (admin/content/nodewords/meta-tags/other):
- clicked "Add meta tags"
- Path: "node/6" (existing node of content type "page")
- checked NOFOLLOW and NOINDEX and clicked "Save"
- clicked "Add meta tags"
- Path: "Impressum" (existing Panels display page)
- checked NOFOLLOW and NOINDEX and clicked "Save"

After visiting both paths and looking into source code there isn't the expected line
<meta name="robots" content="nofollow, noindex" />
in the header section.

If I go to "node/6/edit" I can check the robots-meta tags and they are shown correctly. But there is no such work-around for my Panels page.
Also I successfully tried to set robots-meta tags for admin/content/nodewords/meta-tags/errorpage_403 and admin/content/nodewords/meta-tags/errorpage_404.

Used versions:
- Nodewords 6.x-1.3-beta5
- Nodewords basic 6.x-1.3-beta5

- Panels 6.x-3.2

- Global Redirect 6.x-1.2
- Path redirect 6.x-1.0-beta4
- Pathauto 6.x-1.2

I mentioned the above modules because after reading http://drupal.org/node/639392 I want to make sure that they aren't the reason of my problem.
Could it be a problem, that my Drupal installation is a subdirectory, so paths are not like http://example.com/node/6, but like http://example.com/subdirectory1/subdirectory2/node/6? But everything else is working fine...

Many thanks in advance.