Thanks for your answer.
Yes I have. Crop, size, position and even sharpness and contrast.
There is a check box in the size tab to unlock the aspect ratio but according to the nPrinting tutorial, nPrinting always keeps the aspect ratio even with the box unchecked.
I hope they rewrite that code to let the developer choose what to do.
It is a bug. No doubt.
I think it could be because NPringting code is mixing with PowerPoint code. Weird - random things happen. Sometimes it does also with images in excel. What is doing now is NOT taking the watermark from the images.
Even more, let me show you this: It an issue with colors now. As I say weird - random behaviors.