Deactivating Options Framework breaks site 2

I’ve got the same problem as that described in post-7947173. But as it’s marked as resolved I’m posting again.

I’m getting the “You can safely remove the Options Framework plugin from your site” message. The problem is that if I deactivate the Options Framework, I get a bar at the top of the page and then a blank screen.

I have changed of_get_option to portfoliopress_get_option in my child theme files but it made no difference.

I set WP_DEBUG to true in wp-config.php but that didn’t produce anything. I’m not sure where I’m supposed to be looking though.

I also tried deactivating the other plugins to no avail.

My site is http://gillianpearce.com

Any suggestions?

Thanks!