Visual Studio Community missing developer tools fo

问题:

I am tryign to build and run under the Debug profile.

So my Xcode is up to date 9.2 (9C40b). Checked the app store and the developer portal, no updates to it. Visual Studio Community is also up to date at 7.3.2 (build 12) (stable channel)

Connecting my iPhone with only Xcode Running does not update anything as I have seen between other version updates.

Visual Studio Community outputs the following info.

Connected to: Dev iPhone

error MT1108: Could not find developer tools for this 11.2.1 (15C153) device. Please ensure you are using a compatible Xcode version and then connect this device to Xcode to install the development support files.

Is anyone else running into this? If so, how have you addressed it?

... later ...

The plot thickens. So I rebooted the phone, now I get this error on app startup:

dyld: Library not loaded: @rpath/libmonosgen-2.0.dylib

required code signature missing.

Per this bug: https://bugzilla.xamarin.com/show_bug.cgi?id=26404

If I disable Incremental Builds on the iOS project, the afore mentioned error is no more.

...later still ...

Clearing Derived Data

cd ~/Library/Developer/Xcode/DerivedData && rm -rf *
rm -rf ~/Library/Caches/com.apple.dt.Xcode

And cleaning the project seemed to do the trick.