Run Tomboy with Mono 3.2 on Mac

Compiling it from scratch based on http://xmemory.tompium.com/2012/06/running-tomboy-note-taking-app-on-mac.html doesn't work anymore. Here are the additional instructions:-

• After getting the latest version of Tomboy (1.15.3),  replace "flush(true)" with "flush()" in Note.cs to fix a compile error. Not sure why the compiler complained about this line. Anyway, using just "flush()" fixes the problem but it may not write everything to disk straight away.
• After building Tomboy, running it caused an exception:- 

Missing method System.Reflection.Assembly::op_Equality(Assembly,Assembly)

To fix it, modify a script file called Tomboy in Tomboy.app -> Contents/MacOS/Tomboy by changing the last line to

exec -a "Tomboy" "$MONO" --runtime=v4.0 --debug $ASSEMBLY $@

Refs
https://bugs.launchpad.net/ubuntu/+source/mono/+bug/882501
http://xmemory.tompium.com/2012/06/running-tomboy-note-taking-app-on-mac.html

Offline Maps on New Google Maps for iOS (v2) and Android (v7)

To download an area on the map, type 

ok maps

in the search box.

To clear the cached map, go to

Settings -> About, terms & privacy -> Terms & privacy 

and select

Clear application data

Refs
http://www.idownloadblog.com/2013/07/17/offline-maps-in-google-maps-2/

System.Object is not defined or imported when building PCL project in Xamarin Studio 4.0.12

There're also a bunch of similar errors:-

: error CS0518: The predefined type `System.Object' is not defined or imported
: error CS0518: The predefined type `System.ValueType' is not defined or imported
: error CS0518: The predefined type `System.Attribute' is not defined or imported
: error CS0518: The predefined type `System.Int32' is not defined or imported
: error CS0518: The predefined type `System.UInt32' is not defined or imported
. . .

To fix this, go to References -> Edit References -> .Net Assembly then add mscorlib.dll from /Library/Frameworks/Mono.framework/Libraries/mono/4.5

Refs
https://bugzilla.xamarin.com/show_bug.cgi?id=12845