The program runs flawlessly on Windows 7.
The resizing options are a bit strange. Apart from the obvious choices x2, x3 etc. I can also enter actual dimensions but when trying to resize an 768×1024 image to 2490×3510 (standard A3 at 300 dpi) Stepok insists on making it 4380×3510 or (after some experimenting) 2633×3510 which then has to be cropped in Photoshop.
A choice of standard formats (A3, A4, A5) and dpi, with a crop function as in Photoshop, would be a great improvement. I hope the developers will consider adding this.