I loaded SharePoint Designer this morning and when I clicked on the Lists and Libraries navigation item I saw just a blank screen with the message "There are no items to show in this view".
I knew that I recently made some changes to some List Definitions (I deleted a list definition from my solution) so my first assumption was that I broke something by doing so.
SharePoint Designer uses the /_vti_bin/ListData.svc web service to pull content, so by breaking the list definition, the web service broke as well and could no longer return valid values.
To fix the issue, I went to "All FilesLists" in SharePoint Designer and then, one at a time, I clicked on a list and then the Preview in Browser button in the ribbon. If the list loaded, everything was fine, but eventually I found the list that failed. I deleted that list and then went back to the Lists and Libraries section and everything work normally!