Can't edit any theme - Invalid Markup

[Kostik]

Hi. I've gone through this tutorial https://playnite.link/docs/tutorials/the...Blend.html but can't edit any theme with Microsoft Blend or Visual Studio. I tried 2017 and 2019 Community Edition.

So my steps are:
1. Go to my Playnite installation
2. Execute
Toolbox.exe new fullscreentheme "MyTheme"
3. Go to \Themes\Fullscreen\MyTheme
4. Right click on Theme.sln, open with "Blend for Visual Studio" (checked that it is 2017 version)
5. In Blend I try to open file Theme/Views/Main.xaml (the same situation for any file within Views folder). And it says "Invalid Markup".

I've tried to find any information in the internet, some people had the same issue but there is no solution available. Also I would appreciate if somebody go through my steps or through tutorial and claimed that it works at least for somebody. Thx.

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Ok. Looks like I figured it out more or less. You can't use portable Playnite to do it for some reason, Installed version only.

[Crow]

You definitely can use portable instance. There is no difference between portable and installed when it comes to editing themes.