Crashing on El Capitan with Mono 4.6

[JustinAiken]

$ which mono
/usr/local/bin/mono

$ mono --version
Mono JIT compiler version 4.6.0 (Stable 4.6.0.245/746756c Mon Sep 19 13:57:55 BST 2016)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
    TLS:           normal
    SIGSEGV:       altstack
    Notification:  kqueue
    Architecture:  amd64
    Disabled:      none
    Misc:          softdebug
    LLVM:          supported, not enabled.
    GC:            sgen

$ mono /Users/jaiken/Desktop/RocksmithCustomSongToolkit.app/Contents/Resources/RocksmithCustomSongToolkit.exe                                                                                                                           
WARNING: The Carbon driver has not been ported to 64bits, and very few parts of Windows.Forms will work properly, or at all
exception inside UnhandledException handler: The type initializer for 'System.Windows.Forms.WindowsFormsSynchronizationContext' threw an exception.

[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeInitializationException: The type initializer for 'System.Windows.Forms.WindowsFormsSynchronizationContext' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Windows.Forms.ThemeEngine' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Windows.Forms.ThemeWin32Classic' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Drawing.KnownColors' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Drawing.GDIPlus' threw an exception. ---> System.DllNotFoundException: libgdiplus.dylib
  at (wrapper managed-to-native) System.Drawing.GDIPlus:GdiplusStartup (ulong&,System.Drawing.GdiplusStartupInput&,System.Drawing.GdiplusStartupOutput&)
  at System.Drawing.GDIPlus..cctor () [0x000cc] in <93576e487af246b9880ff86779ad60ff>:0
   --- End of inner exception stack trace ---
  at System.Drawing.KnownColors..cctor () [0x0001a] in <93576e487af246b9880ff86779ad60ff>:0
   --- End of inner exception stack trace ---
  at System.Drawing.Color.get_Black () [0x00000] in <93576e487af246b9880ff86779ad60ff>:0
  at System.Windows.Forms.ThemeWin32Classic..cctor () [0x00000] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
   --- End of inner exception stack trace ---
  at System.Windows.Forms.ThemeVisualStyles..ctor () [0x00000] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
  at System.Windows.Forms.ThemeEngine..cctor () [0x0002d] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
   --- End of inner exception stack trace ---
  at System.Windows.Forms.SystemInformation.get_MenuAccessKeysUnderlined () [0x00000] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
  at System.Windows.Forms.Control..ctor () [0x000ea] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
  at (wrapper remoting-invoke-with-check) System.Windows.Forms.Control:.ctor ()
  at System.Windows.Forms.WindowsFormsSynchronizationContext..cctor () [0x00000] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
   --- End of inner exception stack trace ---
  at (wrapper managed-to-native) System.Object:__icall_wrapper_mono_generic_class_init (intptr)
  at System.Windows.Forms.WindowsFormsSynchronizationContext.get_AutoInstall () [0x00000] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
  at System.Windows.Forms.Control..ctor () [0x00014] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
  at System.Windows.Forms.ScrollableControl..ctor () [0x00000] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
  at System.Windows.Forms.ContainerControl..ctor () [0x0000e] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
  at System.Windows.Forms.Form..ctor () [0x00012] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
  at System.Windows.Forms.MessageBox+MessageBoxForm..ctor (System.Windows.Forms.IWin32Window owner, System.String text, System.String caption, System.Windows.Forms.MessageBoxButtons buttons, System.Windows.Forms.MessageBoxIcon icon, System.Boolean displayHelpButton) [0x0000c] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
  at System.Windows.Forms.MessageBox+MessageBoxForm..ctor (System.Windows.Forms.IWin32Window owner, System.String text, System.String caption, System.Windows.Forms.MessageBoxButtons buttons, System.Windows.Forms.MessageBoxIcon icon) [0x00000] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
  at (wrapper remoting-invoke-with-check) System.Windows.Forms.MessageBox+MessageBoxForm:.ctor (System.Windows.Forms.IWin32Window,string,string,System.Windows.Forms.MessageBoxButtons,System.Windows.Forms.MessageBoxIcon)
  at System.Windows.Forms.MessageBox.Show (System.String text, System.String caption) [0x00000] in <6d9e5c85ba134a1aa9718d7ee7f74bc5>:0
  at RocksmithToolkitGUI.Program+<>c.<Main>b__1_0 (System.Object s, System.UnhandledExceptionEventArgs e) [0x00039] in <0138c53d05b3445697c633661038b475>:0

[L0FKA]

You're missing dll file, here "System.DllNotFoundException: libgdiplus.dylib"
It's missing libgdiplus so you may help it find it, someone just copy one to toolkits folder (/resources) someone may use links or bash scripts, here http://www.mono-project.com/docs/advanced/pinvoke/dllnotfoundexception

reported it works http://customsforge.com/topic/31443-custom-song-toolkit-wont-open-mac/

may be 64 bit issues too, as you can see that warning :)

[L0FKA]

Read this article to figure out issues with toolkit on mac

[JustinAiken]

Oh you can close this if you like - works fine now with mono 4.0.4

[cozy1]

@JustinAiken Thanks for your help with testing and confirming the latest toolkit fixes this issue.