https://bugs.winehq.org/show_bug.cgi?id=57119 --- Comment #1 from Gauvain Roussel-Tarbouriech <gauvain(a)govanify.com> --- Decompiling a bit more the application, the relevant logic that fails here is: public void InitializeComponent() { if (!_contentLoaded) { _contentLoaded = true; Uri resourceLocator = new Uri("/VOCALOID6;component/mainwindow/mainwindow.xaml", UriKind.Relative); Application.LoadComponent(this, resourceLocator); } } Where LoadComponent fails (the call stack goes a little bit deeper and calls a system xaml parser to initialize the UI but this isn't really relevant). It seems to be fully a WPF bug, I can't find any unexpected issues within the application's logic itself. The xaml can be found in VOCALOID6.DLL resources, which can be viewed using ILSpy. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.