mandroid error XA0000: Invalid create-package command: -v --nosign --sdk-dir=

Good day, I developing Xamarin.Android application for > 4.0 versions and after I have updated up to API Level 19 via SDK manager I get below error mandroid error XA0000: Invalid create-package command: -v --nosign --sdk-dir=

It is my actions before I began getting that error:

1) Updated SDK to last API Level 19 via SDK manager
2) Change TargetVersion from 4.2 to 4.4
3) Start to Debug on GenyMotion simulator with Android 4.4.2
4) Get strange error that have never seen
5) Change TargetVersion from 4.4 to 4.3
6) Start to Debug on GenyMotion simulator with Android 4.4.2 - All ok
7) Start to Release on GenyMotion simulator I got error that it is not supported architecture, than I add checkBox x86 platform at options 
8) Start again to Release on GenyMotion simulator with Android 4.4.2 - 
  and get below XA0000 error.
9) Remove C:\Users\_____\AppData\Local\Android\android-sdk\platforms\android-19 folder
10) Updated all Xamarin from 4.12 to 4.12.1, returned API Level 19
11) Error again

I have read forum theme http://forums.xamarin.com/discussion/10159/can-no-longer-run-android-applications-using-xamarin-4-2-and-xamarin-android-4-10-1 and try to found True but there no such option.

C:\Program Files (x86)\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(1345,3):

mandroid error XA0000: Invalid create-package command: -v --nosign --sdk-dir="C:\Users\chernikovvd\AppData\Local\Android\android-sdk" --builddir="D:\repository\RepoMobileFM\CompanyProduct\Projects\Android\Company.FM.CompanyProduct.Android\obj\Release\android" --framework-dir="C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v4.0" --framework-dir="C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0" --framework-dir="C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\MonoAndroid\v1.0\Facades" -S="D:\repository\RepoMobileFM\CompanyProduct\Projects\Android\Company.FM.CompanyProduct.Android\obj\Release\res" --package="Company.FM.CompanyProduct.Android"........"

So, what problems may be?

Thanks in Advance, Vitaly Chernikov.