Error when running console app

See image.   I get this error when running a console app, both in VS and from the command line.  Anyone ever see this?   Just a few days ago this was running OK.   I have since downloaded the 2010 Web Deployment tools and Azure publish tools, but decided not to use them and uninstalled from the system.  

I do not even get to the first line of code, Sub Main, using VB with breakpoint.

Any thoughts?

inner exception
Console App error
LVL 1
HLRosenbergerAsked:
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Lokesh B RDeveloperCommented:
Hi,

Can you show the Error Line Code?
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Bob LearnedCommented:
With TypeInitializationException, you need to see the inner exception.  There is a View Detail button on the exception window, that you can use to see the InnerException value.

Sounds like a bug was introduced...
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HLRosenbergerAuthor Commented:
See image.  it does show the inner exception.

There is no line of code of my code, as far as I can tell.  If I put a break point right at Sub Main, it never gets there.
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Lokesh B RDeveloperCommented:
Hi,

Try to build your console application and see where is the ERROR.
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SriVaddadiCommented:
Looks like you are trying to typecast XmlComment to XmlElement.  That type cast is not valid.

Try casting it to XmlNode instead
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Bob LearnedCommented:
Does this exception happen with just this one application, or all of them?
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HLRosenbergerAuthor Commented:
I'm not casting anything.  In VS, I do not even it the first line of code, Sub Main.  

A build works fine; only get the error when running.

I believe something I downloaded and installed cause this, one of the deployment/Publish tools.
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HLRosenbergerAuthor Commented:
This turns to be my own issue - sort of.   this console app also uses a DLL I had written.  

In the DLL code, I use XML objects to read in the "connectionString" section of a web.config file.  I had just commented out some no longer used connection strings.   Now, I would have never guessed that a comment would be returned to me, but that's exactly what is happening.   I'm looping through all the XMLElements in the "connectionString" section, and it's returning the comments to me.  And when it hits a comment, that's not an XMLElement, so it throws an exception (see second image), because I'm expecting an datatype of XMLElement.
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HLRosenbergerAuthor Commented:
All your comments help me narrow this down.  thanks.
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