Oops — this comment was buried in a billion spam comments and so I missed it when it was posted. The problem I was running into (and referencing to in this post) was Firefox complaining about “xml processing instruction not at start of external entity” when in fact the problem was the CSS file not being specified correctly in the extension description.

My XML was well-formed, too, but was incorrectly telling Firefox where the CSS file for the extension was, and instead of complaining about a missing CSS file, Firefox instead blew up with an XML error message.

–Ken

It is important to use the element “em:skin” when telling Firefox about skin-related files (e.g. CSS and images) in your extension’s .jar file. Not “em:package

I am getting this error with a well formed xml.I have no control on the xml as its dynamically generated.

I will see if that is my problem.

Best regards,

Ender.

Had the same Error message … another thing to watch out for is the duplicate declaration in .XML file and .XSL file.
Check for duplicate

Obvious i know … but hey @ 2:00am … another story

Sweet

I love how the Internet and blogging helps you help others, just by writing about your own personal experiences. This entry is a thank you note to software developer Ken Fox, who helped me through something quite difficult with this blog entry. When …