[galaxy-user] Chip-seq exercise

Does anyone know what happened to the chip-seq exercise by James? It was part of a collection here: http://main.g2.bx.psu.edu/u/james/p/exercises and it was linked here: http://main.g2.bx.psu.edu/u/james/p/exercise-chip-seq But is it 'Not Found'. It was a very useful exercise. Will it be back soon? Josh