RSS errors with bloglet.com

This is an unexpected XML declaration. Line 2, position 3.
What am I using to fee the RSS?
http://www.taxgrab.org/wordpress/b2rss2.php
My operating theory is that, unlike regular b2 0.61 (where this works), the first link is blank in the source of the generated RSS page (as revealed in IE6 by view source). Unfortunately, I don’t know the source or PHP well enough to figure out what might be generating this spurious blank line.
the rss2 feed in b2evolution also works (and doesn’t generate a spurious leading blank line).
I use bloglet.com with every blog I deploy, so this is a major problem for me.
How can I get this fixed?!?