Why isn't Expression Blend 4 rendering my User Control? It's only showing XAML

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I'm seeing the same issue as this post

Why isn't Expression Blend rendering my User Control? It's only showing XAML

But I'm using Blend 4 and VS 2010. It's a WPF app.

I already had the ProjectTypeGuids (mentioned in that post) in my project file.

{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}

I also ran Blend 4 SP1; but it didn't help.

I've tried using various versions of the target framework: .NET Framework 4, .NET Framework 4 Client Profile, .NET Framework 4 Client Profile Platform Update 1, .NET Framework 4 Platform Update 1

Ideas anyone? thanks!

Also, I'm still trying to understand how to pose this question on this forum. (newbie here) Should a new question have been asked here (as I did) or should this question have been surfaced as an edit to someone else's answer on the referenced post? I guess what's confusing me is that I don't see an "ask a follow up question" button.

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wpfxamlexpression-blend
Take a look at this answer it might be a problem with build configurations if using multiple assemblies. – Lukazoid
Have you tried commenting everything out except the most basic visual elements to see if anything will display? Is it only your UserControl or do any of your windows/views display? – CodeWarrior
I tried commenting almost everything out...but it still doesn't display. I noticed that there's also other things disabled such as Add New Item. The project opens fine and builds in either Blend or VS. – CalvinDale

1 Answers

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What is your platform target? Blend generally wants to use AnyCPU. Dropping down to a specific instruction set (x86 or x64, for example) makes Blend unhappy.