500 internal server error

Hi,

I´m posting this again since the other one seems to have no activity or solution.

I´ve tried to put this code in wp-config.php – define( 'HMBKP_ZIP_PATH', false );

My URL is http://www.skaust.net

I´ve used this plugin with great success on several sites but this is the first time I´ve run in to problems.

Screen shot with description of the problem

Regards, Elvar

http://wordpress.org/extend/plugins/backupwordpress/