SpawnProcess fails when console is hidden

[Adam D. Ruppe]

My guess, just looking at it, is that spawnProcess fails because 
there's  no streams available for stdin, stdout, and stderr. It 
tries to reuse the ones of the parent process, but without a 
console they don't work.

It might help to use Config.suppressConsole.. I'm just guessing 
but maybe try:

spawnProcess(`[c:\.......]`, recipe, Config.suppressConsole);

and see what happens. Alternatively maybe redirect the stdin, 
stdout, and stderr to log files instead of using the default (by 
passing File arguments to spawnProcess too)