I apologize if this ends up being an OSX issue but I am using also suspecting an iOS problem. With OS 10.10 and iOS 8.1 I was able to send and receive SMS messages from the MBP via Messages. Since the release of OS 10.10.1 and iOS 8.1.1 this function has stopped. It may very well be the fault of OS 10.10.1 but I thought I'd ask here. I don't believe I changed any related settings on either device.