I have three PCs on my desk. All feed two Brother MFC-9440CN printer/scanners using USB connections and TrippLite USB switches. All PCs running 12.04 64-bit (but can also boot to Win XP Pro SP3). Two of three PCs work well with both MFC devices doing PDF printing. All three work well on scannning from both MFCs. One PC keeps giving /usr/lib/cups/filter/pdfto
ps fail errors when printing PDF, but not character-based documents. Same error occurs when using cups-pdf to print to file. Offending PC is hp/compaq dx2250M dating from 2007. Win XP side works fine, and this PC has printed PDFs from Ubuntu 12.04 64-bit before.
Posting same question on other forums has failed to yield an answer. I have attached a copy of the CUPS error file.