The default images used on the app/script/library pages aren't pointing to the CDN, so their use of HTTPS causes a certificate error that prevents the image from loading:
Could the image sources be updated to point to the CDN?
1 Answer
Should be fixed now - sorry for the delay!
https://sstatic.net/stackapps/img/script-thumb.png, for example, which has an SSL cert valid only for*.stackexchange.com. HOWEVER, all the non-default images usehttp://andhttp://sstatic.net/stackapps/img/script-thumb.pngloads just fine.