Vbseo Error advice please ?

[MacLoving]

any idea as 2 why when i submit a sitemap to google webmasters every 1 gets a green tick apart from the 1 below

/sitemap_blog_1.xml.gz

when i click on the error i get this

General HTTP error: 404 not found
We encountered an error while trying to access your Sitemap. Please ensure your Sitemap follows our guidelines and can be accessed at the location you provided and then resubmit.

any 1 got an idea why the blog sitemap is getting this error ?

 

[MacLoving]

okay above works fine now but now this problem its driving me nutz any 1 no a fix ?

tested my robot txt file its allowed so any ideas as to the below:

all my sitemaps have a green tick apart from 1 this 1 below

sitemap_cms_1.xml.gz

i get a orange triangle and the below error ? any suggestions how to fix ?

URLs roboted out
When we tested a sample of the URLs from your Sitemap, we found that the site's robots.txt file was blocking access to some of the URLs. If you don't intend to block some of the URLs contained in the Sitemap, please use our robots.txt analysis tool to verify that the URLs you submitted in your Sitemap are accessible by Googlebot. All accessible URLs will still be submitted.

 

[Mr.WT]

google it

 

[MacLoving]

i have googled it and there is no definitive answer so thats why i asked here , google was my first point of call.

but thanks for letting me no about something called google