Deleting empty measures at end of a song

All Cakewalk DAWs play through the last bit of data. When a project plays past the expected end, it is often the result of an automation node or MIDI data to the right of the "end."
 
Select from the expected end to the actual end of the project and delete the selection.
 
In most cases, I do not worry about the beginning or end of a project (I always start a project with several empty measures at the beginning) instead when exporting select the tracks and specify a time range. This guarantees the export contains only the data I want.