'load failed UWP.csproj : error : Object reference not set to an instance of an object

My Xamarin.UWP suddenly won't load after Visual Studio 2017 15.4.

I did update my Xamarin PCL and others. But the UWP Project will not load anymore. I can't get to it?

I get this in my VS IDE Output;

UWP.csproj : error : Object reference not set to an instance of an object.

How would I og about solving this?

c++sharpxamarinuwp


Solution 1:[1]

i had the same problem and it turned out that the error was caused by not having all the assets for UWP projects, so I made sure the projects has all assets added to UWP.csproj fil and assets folder.

So my ItemGroup looks like this

<ItemGroup>
    <Content Include="Properties\Default.rd.xml" />
    <Content Include="Assets\LockScreenLogo.scale-100.png" />
    <Content Include="Assets\LockScreenLogo.scale-125.png" />
    <Content Include="Assets\LockScreenLogo.scale-150.png" />
    <Content Include="Assets\LockScreenLogo.scale-200.png" />
    <Content Include="Assets\LockScreenLogo.scale-400.png" />
    <Content Include="Assets\SplashScreen.scale-100.png" />
    <Content Include="Assets\SplashScreen.scale-125.png" />
    <Content Include="Assets\SplashScreen.scale-150.png" />
    <Content Include="Assets\SplashScreen.scale-200.png" />
    <Content Include="Assets\SplashScreen.scale-400.png" />
    <Content Include="Assets\Square150x150Logo.scale-100.png" />
    <Content Include="Assets\Square150x150Logo.scale-125.png" />
    <Content Include="Assets\Square150x150Logo.scale-150.png" />
    <Content Include="Assets\Square150x150Logo.scale-200.png" />
    <Content Include="Assets\Square150x150Logo.scale-400.png" />
    <Content Include="Assets\Square44x44Logo.scale-100.png" />
    <Content Include="Assets\Square44x44Logo.scale-125.png" />
    <Content Include="Assets\Square44x44Logo.scale-150.png" />
    <Content Include="Assets\Square44x44Logo.scale-200.png" />
    <Content Include="Assets\Square44x44Logo.scale-400.png" />
    <Content Include="Assets\Square44x44Logo.targetsize-16_altform-unplated.png" />
    <Content Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png" />
    <Content Include="Assets\Square44x44Logo.targetsize-32_altform-unplated.png" />
    <Content Include="Assets\Square44x44Logo.targetsize-48_altform-unplated.png" />
    <Content Include="Assets\Square44x44Logo.targetsize-256_altform-unplated.png" />
    <Content Include="Assets\StoreLogo.png" />
    <Content Include="Assets\Wide310x150Logo.scale-100.png" />
    <Content Include="Assets\Wide310x150Logo.scale-125.png" />
    <Content Include="Assets\Wide310x150Logo.scale-150.png" />
    <Content Include="Assets\Wide310x150Logo.scale-200.png" />
    <Content Include="Assets\Wide310x150Logo.scale-400.png" />
  </ItemGroup>

Solution 2:[2]

I had this issue while after upgrading from vs2015 to vs2017.

After following this link and replacing the platform target, it loaded again.

(yes, I know, it doesn't seem to make any sense)

  • Right click target UWP project and select "edit"
  • Alter find and change keys to these values:

replacement:

<TargetPlatformVersion>10.0.16299.0</TargetPlatformVersion>
<TargetPlatformMinVersion>10.0.10586.0</TargetPlatformMinVersion>

Note: the project's platform target might get disrupted.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 h8tow8
Solution 2 Stefan

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