Brought to my attention here. For some reason, running these mods together causes Reverse Factory to throw an error "Failed to load mods: Cannot serialise ttype=function", and yet it works perfectly when pypostprocessing is disabled.
I get the feeling that the issue could be caused by one of my functions being incorrectly instantiated in some subtle way that doesn't normally cause an error, but does when pypostprocessing does whatever it does. I did notice in the log, that it caught my invalid attempt to add a prerequisite technology that didn't exist, though fixing that line didn't fix the load error (and doesn't cause errors normally; the attempt just silently fails without an issue).
Sorry to bring this up, when it seems you are quite busy working on other, more important matters with the 2.0 update.