[feedburner] RSS ERROR "forumids" must end with the ';' "
 

Get most recently, the following error message from feedburner.google.com

Quote:
The file URL does not appear to reference a valid XML. We encountered the following problem: Error on line 1: The reference to entity "forumid" must end with the ',' delimiter.

since 5.29.10 .. the feedburner site shows just a blank page

is it a bug in the external.php?

My link looks like this:
example.com/external.php?type=RSS2&forumids=12,54,54,57,54,74