Editing flat.yml

[the_bertrum]

I wanted to modify the flat profile in CamillaDSP so that it applied the same adjustment to gain as I have in the PEQ filters I'm using.  The aim is to avoid volume differences between the equalized and flat output.  I loaded the flat config into the pipeline editor, dropped the master gain down to -7, saved the file and activated it.  The check now fails saying the file is invalid:

Code:

Invalid config file!
filters: invalid type: sequence, expected a map at line 24 column 10

I now cannot load it back into the editor to undo the changes.

I tried creating a "new" file, then editing that in the same way, I get the same error.  Have I missed something obvious?