LimeWire will actually install Apples MRJ on your system when you install LimeWire, so you should not need to go through the trouble of downloading it from the Apple web site.

Our installer does experience problems on some Mac configurations, however, and it appears that this is what is happening in this case as well. Unfortunately, there is little that you can do to get this to work, unless we switch to using a different installer for the Mac at some point in the future.

The lack of a command line interface on the Mac also negates any other potential options for running LimeWire, so there is really nothing you can do to get this to work. Our apologies.