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Getting strange error trying to run an ASP.NET app in VS 2008

Posted By:      Posted Date: October 19, 2010    Points: 0   Category :ASP.Net

I've upgraded a VS 2005 app to VS 2008, and tried to run it.  I get some very strange behavior.  Something, I don't know what, comes up and says:

"Unable to start debugging on the web server. <!DOCTYPE html PUBLIC "-//W3C/DTD XHTML 1.0
Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd
<html xmlns="http://www.w3.org/1999/xhtml">
<title>IIS 7.5 Detail Error - 500.19 - Internal Server Error</title>

and then it goes on with a lot of HTML.  But the weird thing is that this window isn't one I could scroll through, or copy anything out of.  (I had to do a screen clip and save it as a .png graphics file, so if I've copied anything wrong, I'm sorry about that.)  Anyway, it looks as though it was a part of VS 2008, but there wasn't anything I could do with this window other than close it.  What is this error and what can I do about it?

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