This step is optional, and primarily useful if, for some reason, Pathway Tools does not work on your version of OS X. These hacks were used to get Pathway Tools to work on OS X 10.5, which is no longer officially supported. Additionally, these hacks were tested on OS X 10.6 Server. If you have no problems with using Pathway Tools, skip this section.
If you use these install instructions, please cite: Graham G.M. Alvare, Natalie K. Björklund, John Schellenberg, Richard Sparling, Brian Fristensky; Koala: Overlaying Local Gene Expression Data on BioCyc Pathway Diagrams