Monobjc crash on init when using mono framework 3.80

[fvandepitte]

We bootstrap our code like this:

public void bootstrap ()
    {
        // Load any required framework
        Console.WriteLine ("AppKit");
        ObjectiveCRuntime.LoadFramework ("AppKit");

        Console.WriteLine ("Foundation");
        ObjectiveCRuntime.LoadFramework ("Foundation");

        Console.WriteLine ("WebKit");
        ObjectiveCRuntime.LoadFramework ("WebKit"); // Required for Proxy Detection with Pac files

        try {
            Console.WriteLine ("Growl");
            ObjectiveCRuntime.LoadFramework ("Growl");
        } catch {
            Console.WriteLine("Failed to load the Growl framework, notifications will not work");
            log.Error("Failed to load Growl framework, notifications will not work");
        }

        // Do the bridge initialization
        Console.WriteLine ("ObjectiveCRuntime.Initialize()");
        ObjectiveCRuntime.Initialize ();

        //make sure the nib files are in place
        Console.WriteLine("Linking nib files to correct localization");
        NibLocalizer.SetLanguage();

        //Run the installer if needed, needs to happen here because we need the AppKit/Foundation framework and have the NSApplication bootstrapped 
        Console.WriteLine ("Checking if installer needs to run...");
        bool blnRunInstaller = Utilities.Installer.RunInstaller ();
        if (blnRunInstaller) {
            Console.WriteLine ("Installer needs to run, exiting client");
            while(true) {
                try {
                    Environment.Exit (0);
                } catch {
                    Console.WriteLine("Exiting client failed!");
                    throw new Exception("Exit client");
                }
            }
        } else {
            Console.WriteLine("No need to run installer");
        }
        Console.WriteLine("ObjectiveCRuntime.Initialize() DONE");
    }

    public void run()
    {
        Console.WriteLine("running from Cocoa");
        log.Warn("running from Cocoa");

        NSApplication.Bootstrap();

        /* Change the working directory to the Resources dir as all resources are located there
         * examples are encfs/vnode watcher/....)
         */
        NSAutoreleasePool objPool = new NSAutoreleasePool();
        System.IO.Directory.SetCurrentDirectory(NSBundle.MainBundle.BundlePath + "/Contents/Resources/"); 
        objPool.Drain();

        Console.WriteLine("Application.nib");
        NSApplication.LoadNib("Application.nib");

        Console.WriteLine("Presentation.GUIManager.show(new FormInfo.StatusIconFormInfo());");
        Presentation.GUIManager.show(new FormInfo.StatusIconFormInfo());

        Console.WriteLine("NSApplication.RunApplication();");
        NSApplication.RunApplication();
    }

And it gives this as result:

AppKit
Foundation
WebKit
Growl
ObjectiveCRuntime.Initialize()
Unhandled Exception:
System.TypeInitializationException: An exception was thrown by the type initializer for NomaDeskClient.Presentation.GUIManager ---> System.ArgumentException: Illegal byte sequence encounted in the input.
Parameter name: string
at (wrapper managed-to-native) Monobjc.ObjectiveCRuntime:BootstrapInternal ()
at Monobjc.ObjectiveCRuntime.Bootstrap () [0x00000] in <filename unknown>:0 
at Monobjc.ObjectiveCRuntime.Initialize () [0x00000] in <filename unknown>:0 
at NomaDeskClient.Presentation.Cocoa.GUIManager.bootstrap () [0x00000] in <filename unknown>:0 
at NomaDeskClient.Presentation.GUIManager..cctor () [0x00000] in <filename unknown>:0 
— End of inner exception stack trace —
at NomaDeskClient.Program.Main (System.String[] args) [0x00000] in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeInitializationException: An exception was thrown by the type initializer for NomaDeskClient.Presentation.GUIManager ---> System.ArgumentException: Illegal byte sequence encounted in the input.
Parameter name: string
at (wrapper managed-to-native) Monobjc.ObjectiveCRuntime:BootstrapInternal ()
at Monobjc.ObjectiveCRuntime.Bootstrap () [0x00000] in <filename unknown>:0 
at Monobjc.ObjectiveCRuntime.Initialize () [0x00000] in <filename unknown>:0 
at NomaDeskClient.Presentation.Cocoa.GUIManager.bootstrap () [0x00000] in <filename unknown>:0 
at NomaDeskClient.Presentation.GUIManager..cctor () [0x00000] in <filename unknown>:0 
— End of inner exception stack trace —
at NomaDeskClient.Program.Main (System.String[] args) [0x00000] in <filename unknown>:0

We use Mono 3.80 and Monobjc 6.0.2744.0.