AssemblyPostProcessor from PlantTribes is no longer successfully running

I have used AssemblyPostProcessor in the past to produce predicted peptide sequences for my de novo assembled transcriptome. It is currently not working on a recently assembled transcriptomes. When I checked the program with a transcriptome that has previously produced a success, it also did not work. Both transcriptomes gave be the following error:

/galaxy-repl/main/jobdir/025/886/25886364/ line 9: AssemblyPostProcessor: command not found

This leads me to believe that there is something wrong with program itself.

Has anyone else had this issue? Is there anyway to get AssemblyPostProcessor to work?