Migrating from Silverlight 3 to Silverlight 4

I moved the application from silverlight 3 VS2010 to a system with Silverlight 4 and VS 2010. When I open the solution, I get the following error in the MainPAge.xml file. What's wrong.

Failed to resolve mscorlib for target environment "Silverlight, Version = v3.0". This can happen if the target infrastructure is not installed or if the scroll file is incorrectly formatted.

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2 answers

Open the "Properties" of your projects and make sure that the "Target version of Silverlight" in the "Silverlight" section is installed in Silverlight 4.

Silverlight 3, "Target Silverlight Version" ​​ 3, "" 4. Visual Studio Silverlight 3.

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Source: https://habr.com/ru/post/1741401/


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