Sam, can you look at blocks/unanswered_discussions ... it's a non-standard block that needs some upgrading.

get_record() not available anymore
Debug info: error() is a deprecated function, please call print_error() instead of error()
Stack trace:

• line 792 of /lib/deprecatedlib.php: moodle_exception thrown
• line 1774 of /lib/deprecatedlib.php: call to error()
• line 187 of /blocks/unanswered_discussions/block_unanswered_discussions.php: call to get_record()
• line 301 of /blocks/moodleblock.class.php: call to block_unanswered_discussions->get_content()
• line 355 of /blocks/moodleblock.class.php: call to block_base->is_empty()
• line 880 of /lib/blocklib.php: call to block_base->get_content_for_output()
• line 932 of /lib/blocklib.php: call to block_manager->create_block_contents()
• line 342 of /lib/blocklib.php: call to block_manager->ensure_content_created()
• line 6 of /theme/moodleofficial/layout/general.php: call to block_manager->region_has_content()
• line 622 of /lib/outputrenderers.php: call to include()
• line 580 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()
• line 202 of /course/view.php: call to core_renderer->header()