CorFlags, C# and InteropServices.COMException (0x80040154): Class not registered

CorFlags is a Visual Studio command line utility that allows an executable that was compiled as (for instance) 'anycpu' to be run on a machine of a different architecture.

Some applications written in VS and compiled with x86, will not run on Windows 7.

The executable needs to be modified using corflags.

The error that caused me to find this issue is

System.Runtime.InteropServices.COMException (0x80040154): Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))

Run this in the VS command line.  Navigate to the executable folder.

corflags [path] /32bit

Now, the /32bit tells the .net framework to run this app as a 32 bit application.  Other options are available.

No applicable name scope exists to resolve the name, Error. C# WPF

This error can occur when:

      A storyboard begins ->  myStoryBoard.Begin(myElement); <- and a programatically created element has not been added to a parent yet.

Add 'myElement' to a parent on the form.

ASP.NET MVC RC 2 Publish problems

So there was a major problem publishing my ASP.NET MVC site.

This Virtual Directory does not allow contents to be listed.

This was the error. To fix this, you must

1. Open IIS 6

2. Open the properties for your site

3. Goto Home or Virtual Directory

4. Click Configuration (at the bottom)

5. Insert wildcard for aspnet_isapi.dll

You can find better instructions http://haacked.com/archive/2008/11/26/asp.net-mvc-on-iis-6-walkthrough.aspx

Then, in order to have things like MySQL work, you must put any .dll files in the bin. It won't magically transfer during a publish.