wpf UserControl xaml的标记无效

Question

Today when i launch my project, all my views that contains UserControl have: Invalid Markup error.

   <UserControl x:Class="ProjectName.View.LeftMenuControl"
                 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
                 xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
                 xmlns:local="clr-namespace:RaceFlightConfigurator.View"
                 xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
                 xmlns:UserControl="clr-namespace:ProjectName.View"
                 mc:Ignorable="d" 
                 d:DesignHeight="300" d:DesignWidth="300">
<UserControl:ConnectControl Margin="4"></UserControl:ConnectControl>

</UserControl>

I tried to Rebuild solution , remove Shadow cache folder from designer, etc. but nothing help...

Project works fine.

Answer 1

I found solution. I use Parallels on Mac, and my project was on /Mac/Username/Document s etc. When i moved project to C: path, all works.