Possible bug in system node -11

[James C. W. <jfc...@ya...>]

There may or may not be a bug in pipmak's system nodes-- specifically node -11.
  In a few nodes in my project, there are several sounds which, while declared in node.lua are not yet placed in the project folder. Whenever I enter one of these nodes, pipmak prints the expected "The system cannot find the file specified". However, about 3 times out of 5, it also prints:
"Error running text editor keydown handler: -11/node.lua:76: calling 'selection' on bad self (texteditor expected, got userdata)
stack traceback:
  [C]: in function 'selection'
  -11/node.lua:76: in function <-11/node.lua:33>"

I don't know if this is just somehow due to me not yet including the sound files or whether there is something else at work...