Attempting to use the latest compiled monotouch mvvmcross libraries. Following N+9 but it seems there is a core version of messenger plugin but no monotouch version. How do I fix it? i.e. couldnt find this for touch: Cirrious.MvvmCross.Plugins.Messenger
There isn't one.
The MvvmCross Messenger is a 'pure portable' plugin - it doesn't contain any platform specific extensions, just portable code.
The nuget installers take this into account automatically - as shown in the n=9 video and source code - http://mvvmcross.wordpress.com
You can read more about plugins - including about how to write and load them in https://github.com/MvvmCross/MvvmCross/wiki/MvvmCross-plugins