Initialize Component not declared

I have a XAML page with code behind that works fine... Until I wrap the code behind in a Namespace.  Then I get Initialize Component not declared.

I've encountered this before when copying in code from another project, but it's usually fixed by ensuring the XAML x:Class matched the Private Partial Sub name in code behind.

Any ideas?
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DodsworthAsked:
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Bob LearnedCommented:
That error does mean that it can't find the other part of the partial class.  Can you show just the beginning of the XAML declaration, and the top of the code-behind?
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DodsworthAuthor Commented:
<phone:PhoneApplicationPage
    x:Class="PT.MainPage"

---------------------------------------------------------
Namespace PT

    Partial Public Class MainPage
        Inherits PhoneApplicationPage

        ' Constructor
        Public Sub New()
            InitializeComponent()
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Bob LearnedCommented:
Gotcha: VB.NET classes and namespaces in XAML
http://paulstovell.com/blog/wpf-vbnet-xaml

One difference between XAML in a C# project and VB.NET projects is in specifying the x:Class of your XAML root element
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DodsworthAuthor Commented:
hmm.. In Windows Phone the x:Class is

<AppName>.<PageName>

and in my example the PT Namespace is the same as the AppName.

I've managed to get rid of one 'Not Declared' error on the MainPage by specifying

x:Class="PT.PT.MainPage"

Which I assume equates to

<AppName>.<NameSpaceName>.<PageName>

But the same pattern fails in the App.xaml
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Bob LearnedCommented:
I generally don't like for namespaces names to conflict with class or application names.  As a C# developer, I am not used to these oddities with WPF.
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DodsworthAuthor Commented:
I changed the NameSpace name and that made it clearer to see what was going on!
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