Godra,
searching through forums was the first thing I did. Of course, I know this topic you mentioned.
I followed instructions on Mono homepage as well. Unfortunately, it seems to me that AHMI on Raspberry works nicely for everyone except me :-(
As you can see, I cannot even start AHMI.
My application is pretty simple, only two gauges and few labels on one page. I simplified it down to one label, but the problem persists.
There must be something I missed, but what? Or can be the problem in Raspberry (3, B+) itself?