Some error message if initialization files don't exist
Spent some time to look for an error, only to figure out there was none. Problem was a typo in the path to the file with initial filaments. That does not lead to an error, but it should!
Spent some time to look for an error, only to figure out there was none. Problem was a typo in the path to the file with initial filaments. That does not lead to an error, but it should!