About a week ago my site stopped generating thumbnails when submitting posts to Facebook, either manually or through dlvr.it.
This seems to have started happening following some hosting shenanigans where a couple of directories got temporarily renamed when they shouldn't have (fixed now). I honestly don't see how this issue could have caused the lack of thumbnails, but it's my only lead right now.
No plugins designed to fix this problem seem to help.
I'm running 3.1.3, with the Suffusion theme. Link to site. Any assistance would be greatly appreciated.