Feedburner retrospective correction

Hello

Am fairly new to WP and I am having a problem with Feedburner. I have read a lot of the forum posts but cant find the specific answer I need:

I recently set up my site (www.backupblog.co.uk) Feedburner was working well for first 2 posts and then stopped.There are only 5 posts on the site.

Validation error messages:
Invalid character in a URI: Apple support – iPad backup.

I think I have disabled the plugin which caused problem, but Feedburner will still not allow my feed.

My question is:
Can you edit the feedburner xml file (say in DreamWeaver) and if so where can you find it?

Thanks Paul