MonoTouch - System.Reflection.Emit.ModuleBuilder error

Question

I am trying to test my app in IPhone (IOS 5) and I get the following error. It works in simulator without any issues.

I am referencing an external library (NewtonSoft.Json.Monotouch.dll) which seems to be using System.Reflection.Emit.ModuleBuilder. Is there a way to overcome this issue? Any help regarding this is much appreciated.

" -r "/Developer/MonoTouch/usr/lib/mono/2.1/System.dll" -r "/Developer/MonoTouch/usr/lib/mono/2.1/System.Xml.dll" -r "/Developer/MonoTouch/usr/lib/mono/2.1/System.Core.dll" -r "/Developer/MonoTouch/usr/lib/mono/2.1/monotouch.dll" -r "/Developer/MonoTouch/usr/lib/mono/2.1/System.Runtime.Serialization.dll" -r "/Developer/MonoTouch/usr/lib/mono/2.1/System.Web.Services.dll" -r "/Users/test/application/libraries/Newtonsoft.Json.MonoTouch.dll" -linksdkonly -sdk "5.0" Framework is: /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk Copied /Users/test/application/bin/iPhone/Release/Unleashed.app Could not link assemblies: Mono.Linker.ResolutionException: Can not resolve reference: System.Reflection.Emit.ModuleBuilder

Thanks

UPDATE:

Alright, I downloaded the latest NewtonSoft.Json source code from link, compiled the project and dropped the dll into my project. I still have the same issue. I did figure out the class that refers to System.Reflection.Emit. It is DynamicWrapper class in the Utilities folder.

I saw a similar issue posted in another blog link. The responded to the question suggests to set the Liner behavior to "Link all assemblies". Can anyone explain how to set this?

Answer 1

Newtonsoft.Json.MonoTouch.dll is known to work with MonoTouch. I've seen/compiled many application using it myself.

It's likely that you are either using an old or a mis-compiled version of assembly (e.g. missing defines). Difficult to say which without knowing it's origin. Try to track a newer version (or edit your question to include where it comes from).

Note: The fact that it works with the simulator is because a different mscorlib.dll is used to allow JITting (instead of AOTing) the managed code. This allows the simulator builds to be much faster than device builds.

Answer 2

Instead of compiling the Newtonsoft.Json.MonoTouch.dll, which did not work for me either, I downloaded the source code from github and added the project to my solution in MonoTouch and compiled the solution. Only then everything worked. (and of course as popou mentioned do not forget the MONOTOUCH;NET35;SILVERLIGHT options.)