Any songs that have been scheduled that are in violation of a formatting rule will display in RED font. If all of the songs on a scheduled clock show RED…then you most likely have a time setting in the Violations column. and it will be the same for every song.
what this means is the total content of the hour is over the maximum set on the clock. the content is MORE than your “Partially Scheduled hour Maximum Length”
Some are tempted to set the Fully Scheduled Hour as No Less than 60 Minutes and No More than 60 minutes. DON’T DO IT. It’s while it is technically possible, using M1’s “fit to time” clock units, it is near impossible to manage.