Talking about chapter 4 doesn't help us much Joshua, it does not let us identify a Project. Are ya'll doing the No Texting While Driving" app? If that is true, did you compile the app while using Companion 2.55u? 2.55u must be used along with the sendmessagedirect block. contrary to the discussion in this 'old' tutorial that has gone stale. Also, if using Tablets, be aware GV only works to receive since Google implemented its security requirements late last year.
Also, this tutorial must be tested by building the apk now I believe and used on a phone with network service.