Following on this question, I have built the application in Release and published to a Samsung Galaxy Tab 2 10.1, Android version 4.0.4, and the button click command does not fire. I even put a dialog fragment in there and the command is not actually executed.
When I debug the same app on the same device, it works fine.
Please help.
Please see:
Linker issues like this also mentioned in https://stackoverflow.com/questions/10224376/mvvmcross-experiences-hindsight-limitations