Running WP 2.6 and can't get JetPack to work with it (for last couple of versions). Genesis theme, Frederik child theme, very few plug-ins - one of which is Soliloquy which is an image slider. Once Jetpack updates or installs clean, I get:
The website encountered an error while retrieving http://www.DOMAIN.com/wp-admin/plugins.php?activate=true&plugin_status=all&paged=1&s=. It may be down for maintenance or configured incorrectly.
Error code: 500
Then the admin is generally hosed although sometimes I can hit the front-end which is cached with WP-Super-Cache.
Any ideas would be appreciated.