Hi Philicia,
The fastest workaround for this is to use the raster print file from the Flash customizer, since that’s the only version that support patterns right now.
2nd fastest is most likely inserting the pattern file, which I can email you in a moment.
The Renderer is still a BETA product so it doesn’t support Patterns or FX currently, but we are working on that for an upcoming release. I am looking into an early release of pattern support now.