The Interim solution: Print>PDF>Save PDF to DEVONthink Pro.scpt to produce pdf notes from Web pages does not work in Mac OSX 10.5.8.
The option is visible in the Save Pdf menu of the Print>PDF command, but no pdf is produced at all in DEVONthink Pro Office 2.2 when printing from Firefox.
When printing frpm Safari, a error message appears.
I’ve just successfully printed from Safari 5.0.6 (using Mac OS X 10.5.8 and DEVONthink Pro Office 2.2.1).
Could you please post a screenshot of the error message? In addition, has been anything logged to the system console (see /Applications/Utilities/Console.app)? Finally, are you able to print to an alias of the DEVONthink Pro Office application added to ~/Library/PDF Services?