Catch non-zipfile errors
Catch non-zipfile errors

CartoDB/carto,tomhughes/carto,midnightcomm/carto,pnorman/carto,madeinqc/carto,whitelynx/carto,mapbox/carto,gravitystorm/carto,1ec5/carto,stefanklug/carto,CartoDB/carto,clhenrick/carto