Can't scan in color from HP8600
I can no longer scan in color from my HPOfficeJet Pro 8600 printer to my MAC OSX 10.7.5. It used to work, but no longer does. Have tried the usual fixes (altering settings) and checking for software updates (the latest from HP seems to be 3.3.1) but nothing solves the problem so far. HP online support has not been helpful. I'd very much welcome suggestions. Any ideas?
MacBook Pro, Mac OS X (10.7.5)