Processing how to:

Export the application:
-> File ->Export Application
It generates an application.macosx and application.windows folder into your sketch direction.
Compress both and send them to mail@writtenimages.net
But please test one of them first (And tell us which you have successfully tested).

Test your application under Mac osX:
Open application.macosx rightclick on the application -> show package content
Contents -> MacOS
open your terminal and drag the JavaApplicationStub into it.
press space and write filenames with absolute paths separated by spaces:
/yourpath/debug1.png /yourpath/debug2.png /yourpath/debug3.png ...
press enter:
It should run your application and save the images on the given directions.

Test your Application under Windows:
Open command prompt and drag the application.windows -> yourApplicationName.exe into it.
press space and write filenames with absolute paths separated with spaces:
c:/yourpath/debug1.png c:/yourpath/debug2.png c:/yourpath/debug3.png ...
press enter:
It should run your application and save the images on the given directions.