a more detailed RUN scenario error message

[shakythesherpa]

As it stands now when a user has a failed scenario it simply reports a numeric error code which is not very useful in knowing where in the input the error occurred. Any sort of more detailed error reporting would be helpful.

[invisibleroads]

It looks like one of your tables was missing the "capacity in kva" column.

For these cases, you might want to run the scenario on the laptop instead, where you can see the error in the terminal