Admin Login crashed

I don't know what I did, but my admin login crashed. There is no way in getting to the admin area anymore. Everytime I want to go to the admin page I get an internal server error.
My logfiles are telling me this

*[04-Jun-2013 00:18:35 Europe/Vienna] PHP Warning: include() [<a href='function.include'>function.include</a>]: Unable to access DIR_FS_CATALOG_LANGUAGESgerman/other_images_names.php in /home/.sites/50/site413/web/shop/admin-custom/includes/languages/german.php on line 731

[04-Jun-2013 00:18:35 Europe/Vienna] PHP Warning: include(DIR_FS_CATALOG_LANGUAGESgerman/other_images_names.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /home/.sites/50/site413/web/shop/admin-custom/includes/languages/german.php on line 731

[04-Jun-2013 00:18:35 Europe/Vienna] PHP Warning: include() [<a href='function.include'>function.include</a>]: Failed opening 'DIR_FS_CATALOG_LANGUAGESgerman/other_images_names.php' for inclusion (include_path='.:/usr/share/pear') in /home/.sites/50/site413/web/shop/admin-custom/includes/languages/german.php on line 731*

I think I understand, that the german.php file tries to access the other_images_names.php

• this php file exists in my language folder, so I don't understand why the german.php can't access?!
  But that's the only thing I can get out of that error log code. Unfortainly I don't understand the other stuff.

Can someone pleeeeaaassee help me. Since I finally finished to set up my shop today I'm more than frustrated about this problem..

Thank you very much in advance!!

Greetings from Austria
Katharina

Sounds like you may have loaded the configure.php for the Store side:
/includes/configure.php

to the Admin side:
/your_secret_admin/includes/configure.php

Check the file on the server and see if that is the problem ...

Thank you very much for your quick respose.
I checked the file but the right one was at the right place.

After hours of searching I finally overrode the whole admin folder with my backup files. (I totally forgot that I was so clever to backup...)

It pays to keep a good backup! Now you know. :)