This is the common error encountered in WordPress blogs. Most common error messages will look like “Error on line 34: XML document structures must start and end within the same entity.”, when you try to burn feed in Feedburner. You can directly validate feed there in Feedburner the other option you have go to this site http://feedvalidator.org/ and check if your WordPress blog had any errors in it.
Feed Validation Error: Feedburner unable to burn Rss Feed of my WordPress Blog
This is the common error encountered in WordPress blogs. Most common error messages will look like “Error on line 34: XML document structures must start and end within the same entity.”, when you try to burn feed in Feedburner. You can directly validate feed there in Feedburner the other option you have go to this site http://feedvalidator.org/ and check if your WordPress blog had any errors in it.