Crop image java action always returns false

I want to use the java action form the Image Crop appstore module to resize images to a max width of 800 pixels. I always want to crop the whole image so don't want need to use the widget. I created a "CropImage" Object, uploaded a 1866*1080 image and set the crop_width value to 800. All other attributes have value 0 (default). Executing the javaction always returns false. What am I doing wrong?
1 answers

Width and Height seem to be mandatory for the Crop Image Object. No error was returned. The new version of the cropImage module solves this. Thnx.