Thu Dec 21, 2017 1:01 pmmacsmith wrote: Are you unable to access the url I sent?Yes, I can't access the url, sign up is required.
Thu Dec 21, 2017 1:01 pmmacsmith wrote: I beleive I have a non-empty layer.Which version of QGIS are you using?
Please, remove all other temporary polygon layers (QGIS in older versions tends to mismatch temporary layers in processing input).