I have unistalled fuse and re-installed it.
But still the same Problem.
UPDATE:
All projekts are not building a iOS preview.
What do i am wrong please help!
I tried to build the iOS Preview in verbose mode but still the same error.
Here the log from the console.
Christophs-MacBook-Pro:code-input Christoph$ fuse preview -t=ios -v
Fuse 0.35.0 (build 10867)
Build started: FullCompile
Configuring
Project file: CodeInput.unoproj
Search paths: /usr/local/share/uno/Packages, /Applications/Packages, /Users/Christoph/Library/Application Support/Fusetools/Packages
Packages: UnoCore (0.46.1), Fuse.Designer (0.46.1), Fuse.Platform (0.46.1), Uno.Collections (0.46.0), Uno.Geometry (0.46.0), Uno.Net.Sockets (0.46.1), Uno.Threading (0.46.1), FuseCore (0.46.1), Fuse.Motion (0.46.1), Fuse.Animations (0.46.1), Fuse.Drawing (0.46.1), Fuse.Drawing.Planar (0.46.1), Uno.Net.Http (0.46.1), Experimental.Http (0.46.1), Experimental.TextureLoader (0.46.0), Fuse.Scripting (0.46.1), Fuse.Triggers (0.46.1), Fuse.Elements (0.46.1), Fuse.Controls.Native (0.46.1), Fuse.Gestures (0.46.1), Uno.Data.Json (0.46.0), Fuse.Navigation (0.46.1), Fuse.Scripting.Duktape (0.46.1), Fuse.Scripting.JavaScriptCore (0.46.1), Fuse.Scripting.Jurassic (0.46.1), Fuse.Scripting.V8 (0.46.1), Uno.Testing (0.46.1), Fuse.Reactive (0.46.1), Fuse.Controls (0.46.1), Fuse.Controls.Panels (0.46.1), Fuse.Drawing.Polygons (0.46.1), Fuse.Drawing.Paths (0.46.1), Fuse.Drawing.Batching (0.46.1), Fuse.Drawing.Meshes (0.46.1), Fuse.Drawing.Primitives (0.46.1), Fuse.Effects (0.46.1), Fuse.Text (0.46.1), Fuse.Controls.Primitives (0.46.1), Fuse.Controls.ScrollView (0.46.1), Fuse.Android (0.46.1), Fuse.Controls.Navigation (0.46.1), Fuse.Controls.Video (0.46.1), Fuse.iOS (0.46.1), Fuse.Controls.WebView (0.46.1), Fuse.Desktop (0.46.1), Fuse.FileSystem (0.46.1), Fuse.Physics (0.46.1), Fuse.Selection (0.46.1), Fuse.Storage (0.46.1), Fuse.UserEvents (0.46.1), Uno.Data.Xml (0.46.0), Fuse (0.46.1), Fuse.WebSockets (0.46.1), Polyfills.Window (0.46.1), FuseJS (0.46.1), Outracks.Simulator.Protocol.Uno (0.0.0), Outracks.Simulator.Reflection.Uno (0.0.0), Outracks.Simulator.Client.Uno (0.1.0), CodeInput (0.0.0)
Output dir: build/iOS/Preview
(2,401.74 ms)
Compiling syntax tree
../../Library/Application Support/Fusetools/Packages/Fuse.Controls.Primitives/0.46.1/textcontrols/fallbacktextrenderer/$.uno(166): W4139: Uno.Content.Fonts.CharacterSets is obsolete
/Users/Christoph/Library/Application Support/Fusetools/Packages/Fuse.Controls.Primitives/0.46.1/textcontrols/fallbacktextrenderer/$.uno(166,1): Warning W4139: Uno.Content.Fonts.CharacterSets is obsolete
../../Library/Application Support/Fusetools/Packages/UnoCore/0.46.1/source/uno/$.uno(95): W4139: 'Uno.Application.set_Window(Uno.Platform.Window)' is obsolete: 'Deprecated on mobile. Please interact with UI through fuselibs'
/Users/Christoph/Library/Application Support/Fusetools/Packages/UnoCore/0.46.1/source/uno/$.uno(95,1): Warning W4139: 'Uno.Application.set_Window(Uno.Platform.Window)' is obsolete: 'Deprecated on mobile. Please interact with UI through fuselibs'
../../Library/Application Support/Fusetools/Packages/Fuse.Reactive/0.46.1/$.uno(2258): W4139: 'Uno.Application.get_Current()' is obsolete: 'Application.Current class is deprecated on mobile. Please use CoreApp.Current'
/Users/Christoph/Library/Application Support/Fusetools/Packages/Fuse.Reactive/0.46.1/$.uno(2258,1): Warning W4139: 'Uno.Application.get_Current()' is obsolete: 'Application.Current class is deprecated on mobile. Please use CoreApp.Current'
../../Library/Application Support/Fusetools/Packages/Fuse.Controls.Primitives/0.46.1/textcontrols/fallbacktextrenderer/$.uno(164): W4139: Uno.Content.Fonts.BitmapFont is obsolete
/Users/Christoph/Library/Application Support/Fusetools/Packages/Fuse.Controls.Primitives/0.46.1/textcontrols/fallbacktextrenderer/$.uno(164,1): Warning W4139: Uno.Content.Fonts.BitmapFont is obsolete
../../Library/Application Support/Fusetools/Packages/Fuse.Controls.Primitives/0.46.1/textcontrols/fallbacktextrenderer/$.uno(167): W4139: Uno.Content.Fonts.BitmapFont is obsolete
/Users/Christoph/Library/Application Support/Fusetools/Packages/Fuse.Controls.Primitives/0.46.1/textcontrols/fallbacktextrenderer/$.uno(167,1): Warning W4139: Uno.Content.Fonts.BitmapFont is obsolete
../../Library/Application Support/Fusetools/Packages/Fuse.Controls.Primitives/0.46.1/textcontrols/fallbacktextrenderer/$.uno(65): W4139: Uno.Content.Fonts.BitmapFont is obsolete
/Users/Christoph/Library/Application Support/Fusetools/Packages/Fuse.Controls.Primitives/0.46.1/textcontrols/fallbacktextrenderer/$.uno(65,1): Warning W4139: Uno.Content.Fonts.BitmapFont is obsolete
../../Library/Application Support/Fusetools/Packages/Fuse.Controls.Primitives/0.46.1/textcontrols/fallbacktextrenderer/$.uno(184): W4139: Uno.Content.Fonts.TextTransform is obsolete
/Users/Christoph/Library/Application Support/Fusetools/Packages/Fuse.Controls.Primitives/0.46.1/textcontrols/fallbacktextrenderer/$.uno(184,1): Warning W4139: Uno.Content.Fonts.TextTransform is obsolete
(1,616.86 ms)
Generating code and data
* 36 namespaces stripped.
* 168 types stripped.
* 372 fields stripped.
* 2832 functions stripped.
* 946 classes sealed.
* 1753 functions sealed.
* 90 functions stripped from vtable.
(19,284.94 ms)
FATAL ERROR: Value cannot be null.
Parameter name: source (pass --trace for stack trace)
Build ended
fuse: Failed to compile project
I downgrade my Fuse Version to 31.2 and in this version no Error occured.