I download last version and try to run. It not. So I doit from the command line:
/Applications/Relativity.app/Contents/MacOS/Relativity
Unhandled Exception:
System.MethodAccessException: Method `Monobjc.SafeNativeMethods.object_getInstanceVariable(intptr,string,intptr)' is inaccessible from method `Monobjc.Dynamic.Proxies.RemObjects.Relativity.OSX.Interface.nib.ApplicationController.ImportMembers(RemObjects.Relativity.OSX.Interface.nib.ApplicationController)'
at (wrapper managed-to-native) System.Object.__icall_wrapper_mono_throw_method_access(intptr,intptr)
at Monobjc.Dynamic.Proxies.RemObjects.Relativity.OSX.Interface.nib.ApplicationController.ImportMembers (RemObjects.Relativity.OSX.Interface.nib.ApplicationController instance) [0x0001c] in <806dc3f7eef64c2da56d8f68028bb42b>:0
at Monobjc.Dynamic.Proxies.RemObjects.Relativity.OSX.Interface.nib.ApplicationController.AwakeFromNib (System.IntPtr receiver, System.IntPtr selector) [0x00007] in <806dc3f7eef64c2da56d8f68028bb42b>:0
at (wrapper managed-to-native) F6665B45.pinvoke(intptr,intptr,intptr,intptr)
at F6665B45.objc_msgSend (System.IntPtr receiver, System.IntPtr selector, System.Object[] parameters) [0x00034] in <080765fae17e449497f379de8ff2080c>:0
at Monobjc.Bridge.Generators.DynamicMessagingGenerator.SendMessage[TReturnType] (System.String message, System.IntPtr receiver, System.IntPtr selector, System.Object[] parameters) [0x000d0] in <3acaaf7deacf45ad8da69a37f6f6876f>:0
at Monobjc.ObjectiveCRuntime.SendMessage[TReturnType] (Monobjc.IManagedWrapper receiver, System.String selector, System.Object[] parameters) [0x00054] in <3acaaf7deacf45ad8da69a37f6f6876f>:0
at Monobjc.Cocoa.NSBundle.LoadNibNamedOwner (Monobjc.Cocoa.NSString aNibName, Monobjc.Id owner) [0x00000] in <0cae9098c16c497bb9937659d38dee8c>:0
at Monobjc.Cocoa.NSApplication.LoadNib (System.String filename) [0x0002a] in <0cae9098c16c497bb9937659d38dee8c>:0
at RemObjects.DRelativity.OSX.Program.Main () [0x00014] in <3c95e7ee311242f59c15a86c25f96d43>:0
[ERROR] FATAL UNHANDLED EXCEPTION: System.MethodAccessException: Method `Monobjc.SafeNativeMethods.object_getInstanceVariable(intptr,string,intptr)' is inaccessible from method `Monobjc.Dynamic.Proxies.RemObjects.Relativity.OSX.Interface.nib.ApplicationController.ImportMembers(RemObjects.Relativity.OSX.Interface.nib.ApplicationController)'
at (wrapper managed-to-native) System.Object.__icall_wrapper_mono_throw_method_access(intptr,intptr)
at Monobjc.Dynamic.Proxies.RemObjects.Relativity.OSX.Interface.nib.ApplicationController.ImportMembers (RemObjects.Relativity.OSX.Interface.nib.ApplicationController instance) [0x0001c] in <806dc3f7eef64c2da56d8f68028bb42b>:0
at Monobjc.Dynamic.Proxies.RemObjects.Relativity.OSX.Interface.nib.ApplicationController.AwakeFromNib (System.IntPtr receiver, System.IntPtr selector) [0x00007] in <806dc3f7eef64c2da56d8f68028bb42b>:0
at (wrapper managed-to-native) F6665B45.pinvoke(intptr,intptr,intptr,intptr)
at F6665B45.objc_msgSend (System.IntPtr receiver, System.IntPtr selector, System.Object[] parameters) [0x00034] in <080765fae17e449497f379de8ff2080c>:0
at Monobjc.Bridge.Generators.DynamicMessagingGenerator.SendMessage[TReturnType] (System.String message, System.IntPtr receiver, System.IntPtr selector, System.Object[] parameters) [0x000d0] in <3acaaf7deacf45ad8da69a37f6f6876f>:0
at Monobjc.ObjectiveCRuntime.SendMessage[TReturnType] (Monobjc.IManagedWrapper receiver, System.String selector, System.Object[] parameters) [0x00054] in <3acaaf7deacf45ad8da69a37f6f6876f>:0
at Monobjc.Cocoa.NSBundle.LoadNibNamedOwner (Monobjc.Cocoa.NSString aNibName, Monobjc.Id owner) [0x00000] in <0cae9098c16c497bb9937659d38dee8c>:0
at Monobjc.Cocoa.NSApplication.LoadNib (System.String filename) [0x0002a] in <0cae9098c16c497bb9937659d38dee8c>:0
at RemObjects.DRelativity.OSX.Program.Main () [0x00014] in <3c95e7ee311242f59c15a86c25f96d43>:0
Mac OS X 10.12.6
Darwin 16.7.0 Darwin Kernel Version 16.7.0
Fri Apr 27 17:59:46 PDT 2018
root:xnu-3789.73.13~1/RELEASE_X86_64 x86_64
Mono 5.10.1.57 (2017-12/ea8a24b1bbf) (64-bit)
Xcode 9.2 (13772)
Build 9C40b