"Open a File, Folder, Application" not accepting variable?

[JMichaelTX]

@ajg23

Actually, I now realize what would really be helpful: clicking the error notification bringing up Keyboard Maestro at the step where the error happened, optionally in debug mode! This would decrease the need to go in and out of debug mode and set break points.

This is not exactly what you are asking for, but I think it might help:
###MACRO: [KM] Display Macro Error

Please feel free to post any feedback on the macro topic.