Steve,
The error you're seeing is due to this script using a deprecated (and now removed) way of manipulating the power to the layout, namely:
`jmri.InstanceManager.powerManagerInstance().setPower(jmri.PowerManager.OFF)`
becomes
`jmri.InstanceManager.getDefault(jmri.PowerManager).setPower(jmri.PowerManager.OFF)`
I've modified the file to the new way, and uploaded it to:
/g/jmriusers/files/ProblemsBeingWorkedOn/Speed%20Match%20Loop%20Problem/USpeedMatch_v1.3.2.py
Hopefully that helps you further.
Best regards,
Matt H?