I had Instapress installed on the blog I am designing. Yesterday I saw that I couldn't access the blog, all I got was the "White screen of death".
I deleted the Instapress-folder which resolved the problem. Then I re-installed the plugin, but when I tried to activate it I got the following message:
"Fatal error: Call-time pass-by-reference has been removed in /www/.../public_html/wp-content/plugins/instapress/instagram.php on line 306"