Commented Unassigned: Current code does not compile for .Net 3.5 [2642]

I have been trying to compile the current master branch of the repo for .Net 3.5 with no luck. Anything I may be missing?
Comments: ** Comment from web user: SearchForTheCode **

Yep.. tested the latest commit (and the one before). Does not compile due to some interfaces that cannot be found..

Any news when this will be fixed (because in the latest builds you fixed the disconnect issue with would be important to me)