[Newbies] Running Squeak headless

[H. Hirzel]

Hello

I have the following batch script called testBatch.bat on Windows7

    croquet -headless Squeak4.4-12327.image testBatch.st

with a Smalltalk file called testBatch.st which contains

    FileStream stdout nextPutAll: (3 + 4) printString; flush.


I run it from the command line. Instead of printing the result to the
console the GUI comes up.

What am I missing here?

Thank you for the answer in advance.

--Hannes