I had the same issue and rolled back to 4.0.4 and that solved the problem for now. So If you can downgrade it might be worth trying
D David Black Technical Manager (Web projects) Casewise Systems Ltd | www.casewise.com +44 1923 830300 office +44 1923 830270 direct 64 Clarendon Road, Watford WD17 1DA "When You Can See More, You Can Do More!" -----Original Message----- From: monotouch-boun...@lists.ximian.com [mailto:monotouch-boun...@lists.ximian.com] On Behalf Of Sebastien Pouliot Sent: 13 September 2011 14:15 To: tomf84 Cc: monotouch@lists.ximian.com Subject: Re: [MonoTouch] mtouch crashing under MonoTouch 4.0.7 Hello Tom, This affects a few* projects when building for devices only (simulator builds are fine). MonoTouch 4.2 ('beta' now,but should be moved to 'stable' soon) already has the fix for this. More details in: http://bugzilla.xamarin.com/show_bug.cgi?id=604 Regards, Sebastien * no one could provide me with a test case but I'm 99% confident that this is fixed. If you can attach a test case to the bug report I'll be able to confirm this (100%). On Tue, Sep 13, 2011 at 8:52 AM, tomf84 <m...@tomfanning.eu> wrote: > Following on from this morning's upgrade to MT 4.0.7, I am now finding mtouch > is crashing on code which worked fine yesterday, when compiling in Release > mode only. > > Error 1: mtouch failed with the following message: > > Unhandled Exception: System.NullReferenceException: Object reference not set > to an instance of an object > at MonoTouch.Registrar.TypeSystemDescriptor.MethodMatch > (Mono.Cecil.MethodDefinition candidate, Mono.Cecil.MethodDefinition method) > [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.PropertyMatch > (Mono.Cecil.PropertyDefinition candidate, Mono.Cecil.PropertyDefinition > property) [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.TryMatchProperty > (Mono.Cecil.TypeDefinition type, Mono.Cecil.PropertyDefinition property) > [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.GetBasePropertyInTypeHierarchy > (Mono.Cecil.PropertyDefinition property) [0x00000] in <filename unknown>:0 > at > MonoTouch.Registrar.TypeSystemDescriptor+<CollectCandidateProperties>c__Iterator0.MoveNext > () [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.ProcessMethods > (Mono.Cecil.TypeDefinition type, MonoTouch.Registrar.Class class) [0x00000] > in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.ProcessType > (Mono.Cecil.TypeDefinition type) [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.ProcessAssembly > (Mono.Cecil.AssemblyDefinition assembly) [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.Process (IEnumerable`1 > assemblies) [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.Describe (IEnumerable`1 > assemblies) [0x00000] in <filename unknown>:0 > at Registrar.Generate (System.Collections.Generic.List`1 list, > MonoTouch.Tuner.MonoTouchResolver resolver) [0x00000] in <filename > unknown>:0 > at MTouch.RunRegistrar (System.Collections.Generic.List`1 assemblies, > System.String assemblies_path, System.String output_dir, System.String& > output_file) [0x00000] in <filename unknown>:0 > at MTouch.CompileToNative (System.String user_gcc_flags, > System.Collections.Generic.List`1 assemblies) [0x00000] in <filename > unknown>:0 > at MTouch.Main (System.String[] args) [0x00000] in <filename unknown>:0 > [ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException: Object > reference not set to an instance of an object > at MonoTouch.Registrar.TypeSystemDescriptor.MethodMatch > (Mono.Cecil.MethodDefinition candidate, Mono.Cecil.MethodDefinition method) > [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.PropertyMatch > (Mono.Cecil.PropertyDefinition candidate, Mono.Cecil.PropertyDefinition > property) [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.TryMatchProperty > (Mono.Cecil.TypeDefinition type, Mono.Cecil.PropertyDefinition property) > [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.GetBasePropertyInTypeHierarchy > (Mono.Cecil.PropertyDefinition property) [0x00000] in <filename unknown>:0 > at > MonoTouch.Registrar.TypeSystemDescriptor+<CollectCandidateProperties>c__Iterator0.MoveNext > () [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.ProcessMethods > (Mono.Cecil.TypeDefinition type, MonoTouch.Registrar.Class class) [0x00000] > in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.ProcessType > (Mono.Cecil.TypeDefinition type) [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.ProcessAssembly > (Mono.Cecil.AssemblyDefinition assembly) [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.Process (IEnumerable`1 > assemblies) [0x00000] in <filename unknown>:0 > at MonoTouch.Registrar.TypeSystemDescriptor.Describe (IEnumerable`1 > assemblies) [0x00000] in <filename unknown>:0 > at Registrar.Generate (System.Collections.Generic.List`1 list, > MonoTouch.Tuner.MonoTouchResolver resolver) [0x00000] in <filename > unknown>:0 > at MTouch.RunRegistrar (System.Collections.Generic.List`1 assemblies, > System.String assemblies_path, System.String output_dir, System.String& > output_file) [0x00000] in <filename unknown>:0 > at MTouch.CompileToNative (System.String user_gcc_flags, > System.Collections.Generic.List`1 assemblies) [0x00000] in <filename > unknown>:0 > at MTouch.Main (System.String[] args) [0x00000] in <filename unknown>:0 > (1) (MyAppNamespace.MyProjectName) > > Currently can't upload code to my testing device. > > Weirdly someone literally just posted this exact issue on StackOverflow but > then immediately deleted their question. Here's the Google cache link. > http://tinyurl.com/6ysmssq > > Thanks in advance... > Tom > > -- > View this message in context: > http://monotouch.2284126.n4.nabble.com/mtouch-crashing-under-MonoTouch-4-0-7-tp3809979p3809979.html > Sent from the MonoTouch mailing list archive at Nabble.com. > _______________________________________________ > MonoTouch mailing list > MonoTouch@lists.ximian.com > http://lists.ximian.com/mailman/listinfo/monotouch > _______________________________________________ MonoTouch mailing list MonoTouch@lists.ximian.com http://lists.ximian.com/mailman/listinfo/monotouch _______________________________________________ MonoTouch mailing list MonoTouch@lists.ximian.com http://lists.ximian.com/mailman/listinfo/monotouch