My b2evolution Version: Not Entered

Hello everybody,

I'm installing the marvellous b2evolution package for the second time. First time - a year or so ago - was just fun and done within half an hour.

Now - on a different server - it's a bit more struggle. I went through the installation procedure (changed _basic_config.php to 666) - but after finishing the procedure I cannot log into the blog:

* Firefox does the login, but shows an entirely empty page (not one single character in the source code,
* Safari says, the connection has been aborted.

I checked the _basic_config.php manually - entries seem to be allright.
This is the site:
http://gordana-crnkovic.de/blogs/admin.php

Help would be highly appreciated!

Thanks and greetings,

herrdeh