Problems upgrading SDK

Hi,
I was going to try SDK 4.2.1, but my app crashes (a lot) and I've fear, so I tried to rollback to SDK 4.1.5 (latest used version) and now I cannot compile to launch the simulator:
"Device 'venu2' requires an SDK version of 4.2.0 or greater to be compiled. The current SDK version is 4.1.5. Please update your SDK using the Connect IQ SDK Manager."

What can I do? try to solve error by error or how can I solve this to keep in my older version?

Thanks in advance

Danielsan over 2 years ago in reply to Laos

Hi Laos,

For me, import Graphics and WatchUi (as import Lang) do the trick.

import Toybox.Graphics;
import Toybox.Lang;
import Toybox.WatchUi;

Cheers,