I posted a beta of Patent Grabber 6.0 that will hopefully fix the problem Mac OSX Mountain Lion users are experiencing with U.S. patent and application downloading. Download it from:
http://www.blazingdawn.com/sw/Patent_Grabber_60-10_ML_beta.zip.

Mountain Lion users: please let me hear from you!

This version is also good for previous Mac OSX systems back to and including Tiger.

Mountain Lion: U.S. downloading problem in Patent Grabber

There is a problem when Patent Grabber tries to download U.S. patents and applications from the USPTO under OS X 10.8 (Mountain Lion). Since the USPTO patent pages are in TIFF format, Patent Grabber must convert each page of a patent to PDF format before combining the pages into a single PDF file. Under Mountain Lion the TIFF-to-PDF conversion has stopped working.

The work-around until I find a fix is to download U.S. patents and applications using Patent Grabber's "International" function. However, remember to precede each number with "US".