cfhtmltopdf with remote PDF service returning “FILE NOT FOUND”

I'm developing with CF11 on a Mac, which doesn't support having a local PDF Service to use with the new tag. But, I'm able to set up a PDF service that points to our dev (Windows) server. That service verifies via the admin.

However, when I try to do a simple test:

<cfhtmltopdf>

    Hello

</cfhtmltopdf>

I get an error of "Error occurred while generating PDF" with the error detail of "Reason: FILE NOT FOUND". If we try this code directly on the dev server (so it's using the local PDF service), it works just fine.

Anyone have an idea of what file it's referring to or what else may be going on?