VS2008 Intellisense screwing up when I add an XMLNS: namespace declaration to my stylesheet

Question

When I have the following (default) declaration in my XSL file, everything works fine. when I type a "<" character, intellisense window pops up with all the xsl: namespace choices as expected.

<xsl:stylesheet version="1.0" 
            xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
            xmlns:msxsl="urn:schemas-microsoft-com:xslt" 
            exclude-result-prefixes="msxsl">

However, when I add this simple xmlns: reference, intellisense somehow loses it's little electronic mind, and forgets all about the xsl: namespace

<xsl:stylesheet version="1.0" 
            xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
            xmlns:msxsl="urn:schemas-microsoft-com:xslt" 
            xmlns:ftid="http://www.boeing.com/FTID-ML"
            exclude-result-prefixes="msxsl">

The only options intellisense shows with the ftid namespace included are

<!--
<![CDATA[
<?

If I remove the reference, intellisense wakes up and works normally. I've tried re-starting VS08, and I'm at a loss.

EDIT: To be clear, I am NOT trying to get intellisense for the ftid: namespace; rather, the intellisense for the xsl: namespace STOPS working when I add the xmlns:ftid reference, then starts working again when I remove it. Can anyone explain why?

Answer 1

Does it reference a schema? If so, you can put the schema it references into a directory named something like:

{Visual Studio install drive}:\Program Files\Microsoft Visual Studio 9.0\Xml\Schemas

and then it should work (can't test it locally right now, sorry).

See this article on doing something similar for XInclude.

Answer 2

Well, I reinstalled VS2008 (for other reasons) and the intellisense works fine now. I hate it when that happens.