The type 'Window' does not support direct content

[lennoncork]

I'm using visual studio 2015 to develop a basic IronPython WPF project. The XAML window shows the error "the type 'Window' does not support direct content", similar to the unrelated issue reported here http://stackoverflow.com/questions/33805234/the-type-window-does-not-support-direct-content.

Previously the issue didn't exist, and I believe it only occurred after updating to VS2015 Update 1 and Python Tools 2.2.

I can repeat this by creating a new IronPython WPF project with no additional content (image attached).

I can also fix the issue, temporarily, by adding a reference to "System.Xml". The reference can then be removed, but the warning will return when the project is loaded again.

[NetworkActiv]

For me, adding System.Xaml (note the 'a') solves the problem properly. Adding any other reference seems to solve it only temporarily.

[lennoncork]

Perfect, that works for me as well! I had to reload the application, but all is well! Thank you!

[NetworkActiv]

Since this approach seems to work, someone should probably make it to where new PTVS WPF projects include the System.Xaml reference by default. It appears that C# WPF projects include this reference by default. I am not sufficiently familiar with this repository to know where in the code this would be done.

[samwhaleIV]

This is still happening. Even with the error the project can still be built/run, though.

[zooba]

We haven't released anything in the last 22 days, that's why it's still happening :)

Our next update will have a fixed template. The fix for existing projects is to add the System.Xaml reference.

[JohnnyDeeee]

Somehow i cant fix this problem with adding the "System.Xaml" reference..

I'm not sure if it is because im using the "MahApps.Metro" plugin
or
because i'm using 2 projects within one solution...