DVD format troubleshooting

I have a very short video, which I've then rendered with vegas and authored with architect. It's meant to be accessed on standalone DVD players, region 1. There seems to be hardware compatibility issues (some people were able to view it, but some people told me they weren't able to open it on a standalone dvd player. It loads but won't play.) On a computer, it works fine on mine, but on another computer, it loads without auto playing in the default DVD player. Get in touch with me if you know how to solve this issue. Some things you need to pay attention to: - You need to be easily reachable on Yahoo Messenger or MSN Messenger. - If you can't start immediately after the job is assigned, please don't bid. - Bad feedback = no job. Thanks for being interested in my job. GSTY