Fatal error message after installation successful

[swedish]

REGARDING OSCOMMERCE 2.2

New Install

Step 2: osCommerce Configuration

The configuration was successful!

And then when I click on the button catalog
In my browser adress line:http://localhost/catalog/default.php
I get this in my browser:

Fatal error: Failed opening required 'includes/languages/.php' (include_path='.;c:\php4\pear') in C:\Inetpub\wwwroot\catalog\includes\application_to p.php on line 250

Please tell me what I have done wrong?

[michael_s]

Check to make sure the paths are correct in configure.php. The install script doesn't always auto enter the correct path info.