VS project convert

I developed a .Net project using Visual Studio Express 2013. Now I need to convert the project into Visual Studio 2010. The first issue is that I cannot open project file, see attached file. After I open the project, it marked incompatible. I need to help to resolve this issue. Thanks.
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open your project in notepad

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 2013
VisualStudioVersion = 12.0.21005.1

Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2010


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minglelinchAuthor Commented:
Thanks for the comment. I changed it but it is still marked as incompatible. Further help please ....
Éric MoreauSenior .Net ConsultantCommented:
you could create a new project in VS2010 and add your files to it.
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Éric MoreauSenior .Net ConsultantCommented:
is your project targeting framework 4.0 (or less)?
AndyAinscowFreelance programmer / ConsultantCommented:
Things convert from older to newer versions, unfortunately not the other way round like you require.

The simplest would be to rename it in the explorer (not visual studio) then create a new project of the original name and project type.  Now copy and paste the original files to this new folder and import them into the new project in visual studio.
Jacques Bourgeois (James Burger)PresidentCommented:
Why do you need to go back to VS2010?

Is it because you have a more advanced edition on 2010, such as the Professional edition, or because you need to target an older version the framework?

If so, then I suggest that you get the VS2013 Community Edition. It will load you Express 2013 project as if it was its own.

It is free, but is the same as the Professional. The only difference is that it cannot be used in organizations with more that 5 programmers.

And you can target an older version of the framework simply through an option in the project's Porperties window. The only problem you might encounter doing so is if your application uses some features that were not available in the old framework.
minglelinchAuthor Commented:
AndyAinscowFreelance programmer / ConsultantCommented:
Out of interest - why did you accept as the answer a comment you stated did not work?
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