The most likely cause of this is not setting booktype to ROM. If your drive (burner) supports it, change the setting from +R to ROM. If your drive does not support this functionality, or if it's already set to ROM, then media choice is the problem. +R media set to ROM is very compatible with Xbox's, followed by -R media.
Note that some standalone players are more picky about -R media, you will need to decide which media type is more desirable for you.