I'm not able to crop images. Please help me

Hi,
I purchased the standard version of XATShow, ver 5.02, but I'm not
able to make an image crop. After resizing and centering an image
crop, I noticed that if I browse the Sequencer and return on that
image the crop area is positioned to the upper left corner with a
new size. It seems that discards my choice.
Is there any way to save that crop?

I'm sorry for my bad english.

Thanks at all.

Guido