TimThumb Error

The following error(s) occurred:

• Error reading the URL you specified from remote host.Could not resolve host: scontent-frt3-2.cdninstagram.com

Query String: src=https%3A%2F%2Fscontent-frt3-2.cdninstagram.com%2Fvp%2F882a9b7e8d11d98a4802a13142fb96c2%2F5D2EAE8C%2Ft51.2885-15%2Fe15%2F54457872_305328443479290_764347139712971130_n.jpg%3F_nc_ht%3Dscontent-frt3-2.cdninstagram.com&w=90&h=64&zc=1
TimThumb version: 2.8.14
Instruction: Thumbnails don't work — what to do? (registration required)