For some reason, the feeds being generated by my drupal site are not working correctly. When I click on the XML button to preview the feed, Firefox displays the following error message:

XML Parsing Error: xml processing instruction not at start of external entity
Location: http://www.alt.ed.nyu.edu/ect/?q=node/feed
Line Number 2, Column 1:
<?xml version="1.0" encoding="utf-8"?>
^

When I view the source, all of the channels and everything are formatted correctly. The problem seems to be in the fact that the feed is producing a blank line before starting in with the <?xml> tag. So, instead of appearing on line 1, as it should, it's showing up on line 2.

Does anyone know how to resolve this problem? Thanks in advance! Any help is appreciated!