All cron jobs are empty

Hey,

after updating from 1.3 to 2.0, the list with all the cron jobs is empty and the tick-boxes has no explanation. Also the auto cron doesn't invoke.

I have moved the supercron.php to the right location, and the "invoke all" works.

I get the following two messages:
The supercron.php file should be copied from the /opt/lampp/htdocs/sites/all/modules/extensions/supercron directory to /opt/lampp/htdocs/; until that is done, your cron-driven tasks will not execute when scheduled to.

warning: Parameter 1 to theme_supercron_settings() expected to be a reference, value given in /opt/lampp/htdocs/includes/theme.inc on line 668.