#2 Mar 31, 2006 15:01
You can work around this problem, where I'm not sure what it's caused by, by temporarily(!) disabling the xhtml checker in /conf/_formatting.php: Set $use_html_checker = 0 there, change your blog settings and set it to 1 after that again.
About the problem: do you have any content in the "subtitle", "long description" or "notes" fields?
It might be a problem with the PHP xml_parser and the used encoding (while saving).