Failed to Import Documents when publishing FM2017 to Responsive HTML5
I am working on setting up procedures to publish a number of FM books to Responsive HTML5 from FM. I am able to successfully publish some books, but others fail with the following (I get this same message if I try to publish even just a single FM file)

I have also tried importing books or individual fm files into RH and get this same (or similar error).
I have taken a look at the logs, but very little information is provided other than that it failed importing.
Can anyone help me with this issue?
John
