doPDF 6.1 build 284 was released (first build for 2009). Update is not necessary, as this build only has some minor specific fixes.
What's changed in doPDF 6.1.284:
Fix: Corrected image conversion when printing from explorer
Fix: A random crash in Windows Vista 64-bits occured when closing Printing Preferences
Update: Minor documentation changes (updated help file, user manual and EULA)
You can download the new version here: doPDF 6.1.284