Blank page on 2nd Page of the Bitweaver Installer

Greetings,

i was just about to set up a bitweaver installation. But i didnt get very far. I copied the files to my webserver and changed the permissions on the two diretories and the config_inc.php

But when i start the configuration by running the installer i dont get beyond the first page. i just get a blank page (no error messages) when i press "Begin the install process".

Any idea whats going wrong?

Thanks in advance for any help,
Jens