Error 52 in 0.9.8

Trying to output a book document from Blurb Booksmart application. Print proceeds to PDF creator, accepts filename, then errors with:

52(Bad file name or number)

Modul: modPDF

Procedure: AppendPDFDocInfo

Line: 50100

Print monitor hangs with document in queue.

OS: Windows Vista X64 Home Premium, SP2