Getting Error while installing VB 5.0
 

I am getting these messages while installing VB 5.0.

What has to be done to install VB 5.0 without getting them messages?

Warning: file_put_contents() [function.file-put-contents]: Filename cannot be empty in /home/content/09/10206809/html/forums/core/install/makeconfig.php on line 253

Warning: file_get_contents() [function.file-get-contents]: Filename cannot be empty in /home/content/09/10206809/html/forums/core/install/makeconfig.php on line 237
Error - Could not open backend config file.