tkdiff 4.1.4 will not run on OS X Lion because Lion no longer supports Power PC applications (i.e., Rosetta is discontinued). I got the following error when I tried to run tkdiff from a Terminal window command line: Launch of "Wish Shell" failed: the PowerPC architecture is no longer supported. Can you release a new version of tkdiff that runs on Lion? And if so, how soon could it be available? Thanks!