I don't think it's related to the recent update, but today on #64 there were TWO different sets of announcements being made. Sometimes the same announcement would be repeated twice, one after the other, and sometimes one was stepping on the other. "Next stop next stop Chelsea which Chelsea which is a flag is a flag..." etc. etc.
It's the first time since the PTIS roll-out that I've heard two at the same time.
I had a hunch that two different control cars were in this consist, both with PTIS logged in & active, and I was right. I checked the live feed .csv (which is the most human-readable one) and sure enough, two cars each think they are running the show... Both 1625 and 1632 are sending trip #64...
1339768205,64,North Station,Chelsea,1339767720,arr,1625,42.39587,-71.03538,272,,
1339768205,64,North Station,Chelsea,1339767720,arr,1632,42.39592,-71.03572,295,,
1339768205,64,North Station,North Station,1339768440,pre,1625,42.39587,-71.03538,272,,420
1339768205,64,North Station,North Station,1339768440,pre,1632,42.39592,-71.03572,295,,420
That's from the live feed CSV URL for Newburyport/Rockport,
http://developer.mbta.com/lib/RTCR/RailLine_12.csv