MacOS X with Lenz

From Jmri

[edit] Notes

There have been cases where users have had problems with throwing turnouts using JMRI and Lenz LS100/LS150s where the turnout commands are sent for too long. It is advised that you connect bulbs or similar to the LS100/LS150 while setting up so that there is no chance of burning out your turnouts.

This may not be just a Mac thing