Canot access user interface

Some questions:

1) If you clear your cache under admin/config/development/performance, does it then show up?
2) If you go directly to admin/appearance/fontyourface, what do you see?
3) Do the links show up under admin/structure/menu/manage/management ?
4) What theme are you using?
5) Any errors under admin/reports/dblog ?
6) Does the UI module show as enabled at admin/modules ?
7) With Views UI enabled, do you see the @font-your-face browse view at admin/structure/views ?

I had a similar issue with 6x version and found that I simply had not assigned permissions... Hope that helps.

Thanks sammyframson. That sounds like a very likely explanation for this that I hadn't considered.

I encounter the same problem. There's no UI as I simply can't access one.
Installed the dev version of @font-your-face because I had an error with the stable one (http://drupal.org/node/1613148).

To answer sreynen's question:

1) If you clear your cache under admin/config/development/performance, does it then show up?
No.

2) If you go directly to admin/appearance/fontyourface, what do you see?
I see the theme selection screen.

3) Do the links show up under admin/structure/menu/manage/management ?
No.

4) What theme are you using?
Custom made theme. I'm using theme Seven for the back end/management.

5) Any errors under admin/reports/dblog ?
No. :(

6) Does the UI module show as enabled at admin/modules ?
Yes.

7) With Views UI enabled, do you see the @font-your-face browse view at admin/structure/views ?
Yes their there! To be more precise:
@font-your-face Browse and Google Fonts API Browse

Oh and,
I checked permissions/roles and it's all ok. I'm using the latest Drupal version.

Hi atiba,

Two more questions:

1) What version of Views are you using?
2) Is there anything listed under "path" by the @font-your-face Browse view?

1) What version of Views are you using?
7.x-3.3

2) Is there anything listed under "path" by the @font-your-face Browse view?
yes, and you know what, I can access the font-your-face GUI!

after a couple of hours it suddenly was visible in my configuration.
although it still doesn't work right (got a lot of AJAX errors when trying to search for a font) i'm glad i've got rid of this problem. a bit strange though because I REALLY cleared the cache and tried several browsers. hell, I even runned cron a couple of times!

I have the same issue. Fresh Drupal 7.18, dev Views, dev @font-your-face.

In the Views preview, I can see the UI, but the url fallback to theme selection screen. With built-in Drupla theme or any other custom theme.

I have a custom theme, which has a hungarian special character in name, so Drupal shows a question mark insidie a cube instead of the 'Ú' character.

After, I changed my theme's .info file encoding to UTF-8 (before was the standard ansi), the ? character disappeared, the 'Ú' appeared, and also appeared the font-your-face settings.

So, change .info file to UTF-8, if it has special character (in name or desc), or use ANSI characters (and translate it via Drupal).