Better error handling needed

While importing a small file (71kb to 357kb, two dozen to 120 posts), I find I have to repeat with the same file multiple times to get it to complete. It’s very tedious. I was hoping to get pro to do a more complex imports with hundreds of posts with many fields, but I can’t do it when it only handles ten or twenty at a time. I gave up on importing all images and am just trying to get at least the featured images to import. Maybe the plugin can handle more posts without any images at all, but that’s not what I need. The size of individual images isn’t the problem, either. It will import a 6MB file fine but then die during a post with a smaller image.