What version of viewer are you using, did you download straight from their site? Also, it could be the file, so I would try a couple. Also you could download the free version of designer, and see if that will work.
Well, I managed to download designer, and grabbed JFCustom's Hawkman helmet, but I can't seem to get the Mark 1 files. I go to "open", and it doesn't show up. When I download it again, it tells me I've already downloaded it! I really appreciate your help with this, laellee, what might I be doing wrong? With my last laptop, I could get the files whenever I needed them, but this seems to be a problem. Thanks!