In the groove~.maxhelp file, inside the [p groove~ and the transport] subpatcher , [transport this] and [transport that] should be [transport @name this] and [transport @name that].
The possible bug on my system involves groove and transport.
If I load the following patch and turn on audio without starting the transport, groove starts playing. The help file says there should be no output with the transport off. Next starting the named transport "this" and varying the tempo has no effect on the groove object with that attribute name, but changing the tempo of the Global Transport does.
3.06 GHz Intel Duo