RSS Feed Error

I have an error for my Feedburner feed (http://feeds.feedburner.com/MeasuringFlower). It says:

This page contains the following errors:

error on line 2 at column 6: XML declaration allowed only at the start of the document
Below is a rendering of the page up to the first error.

I tried all the suggestions I could on this topic: http://wordpress.org/support/topic/xml-parsing-error-xml-processing-instruction-not?replies=40. BUT, to no avail.

Help please! I did just try to deactive the robots.txt file because it was giving issues with Google. Idk if that would cause the problem or not.

Also, please speak in little words and tell me exactly where to go as I’m not the greatest at all this.

My website is http://www.measuringflower.com

Thank you!