warnings showing in google webmaster tools

I went to google webmaster tools and saw that next to my sitemap the word warnings was appearing so I clicked on it and found that I have 32 sitemaps and several of them had warnings and the rest were ok. so clicked on it and it shows up as:

All the URLs in your Sitemap have the same priority.

I took a look at my vbseo sitempal settings, and should there be a setting that I should change?

Hello,

please check this: Google - Sitemap have the same priority