I have the Fullscreen theme (v2.4.4) from Graph Paper Press installed, and just upgraded to WP 3.1.3 today. About the same time I installed the "mp3-jplayer" plugin. Now my homepage thumbnails will NOT work no matter what I try. I have deactivated all plugins one by one, deleted the mp3-jplayer altogether, removed and reinstalled the theme, redid the WP update, re-attached the featured images and published the posts, all to no avail. It was working fine up until today. The only situation I can gather is that maybe there is a new jQuery conflict but I don't know enough about that to solve the problem. All other site functionality seems to be working and the paths to the thumbnail images are good. I have tried Firebug to nail down the problem but I am not getting anything I know how to work with.
The only solid notice I have gotten is "wp-includes/general-template.php:372 - The home option is deprecated for the family of bloginfo() functions. Use the url option instead." However I don't know if this is related to the thumbnail issue.
ANY assistance at all would be much appreciated, this site is for a client who is extremely anxious to have the site ready...
Desperate to solve, thanks in advance