Just to be clear, the problem with this particular project is that it was created at 750x500 pixels, which is 3.75 x 2.75 inches at 200 pixels per inch. Trying to print a page out larger than that, while it will work, will result in reduced quality to some extent. Doing 5x7 wouldn't be bad, but trying to get 8.5 x 11 inches out of it would definitely look a bit fuzzy.
The latest version of Scrapbook MAX! defaults to 1600x1600 pixels which is 8x 8 inches at 200 pixels per inch. That's more that enough for fantastic looking prints, simply by choosing File > Print within the Scrapbook MAX! software - no other software required.
Scrapbook MAX! 2.0 is here!. It's simply better digital scrapbooking software!