Problem with 16F688 and Hserout

[DWV]

I am having a problem getting anything to work with the 16F688. I have built some Midi foot controllers using the 16F628 and they work fine, but I would like to port it over to the 16F688, so I can use the analog inputs. I have also built some projects using the analog inputs on the 12F675 with no problems , but I can't seem to get anthing to work with the 16F688. When I run a simulation in MPLab, it gets stuck in a loop, the problem is that it is not in my programming, but while executing the PBPPIC14.LIB file. Does anyone know of any incompatibilities with the 16f688?
I have attached the code for the project, maybe someone here can let me know what I am doing wrong.
I have also tried it on the 16F88, with the same results.