Synthethic a priori?

Differentiations such as synthetic a priori have long been dismissed by wittgenstein. Not even Mises clearly uses that definition to the contents of praxeology (sometimes referring to it as analytical, or whatever), since he mostly dismissed the question as irrevelant. So, what i mean is, i don't think it's proper to state praxeology as synthetic a priori. For a better view on the basis of the logic of action see this: http://mises.org/journals/scholar/long.pdf
I will erase that part now, if that's ok.

By the way, about the criticisms i read here regarding if praxeology is science or not. It is, of course. Even using criterials from Popper, a well-known neo-positivist (or almost that, anyway), praxeology passes the test.