Android SDK code compiles, but crashes :(

Troubleshooting
1

the following code compiles in android studio 2.3 using io.particle:cloudsdk:0.4.1, but crashes immediately on start, why?

package com.test.myapplication;

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import io.particle.android.sdk.cloud.ParticleCloud;
import io.particle.android.sdk.cloud.ParticleCloudException;
import io.particle.android.sdk.cloud.ParticleCloudSDK;
import io.particle.android.sdk.utils.Async;
import io.particle.android.sdk.utils.Toaster;

public class MainActivity extends AppCompatActivity
    {

        @Override
        protected void onCreate(Bundle savedInstanceState)
            {

            Log.d("debug", "myCloud object created");
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);

            FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
            fab.setOnClickListener(new View.OnClickListener()
                {
                    @Override
                    public void onClick(View view)
                        {
                        Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                                .setAction("Action", null).show();
                        }
                });

            Log.d("debug", "myCloud object called getCloud");
            ParticleCloud myCloud = ParticleCloudSDK.getCloud();

            Async.executeAsync(myCloud, new Async.ApiWork<ParticleCloud, Void>()
                {
                    public Void callApi(ParticleCloud myCloud) throws ParticleCloudException
                        {
                        myCloud.logIn("username", "password");
                        return null;
                        }

                    @Override
                    public void onSuccess(Void value)
                        {
                        Log.i("GOOD", "Something went right making an SDK call");
                        Toaster.l(MainActivity.this, "YAY, something probably will go wrong.");                        }

                    @Override
                    public void onFailure(ParticleCloudException e)
                        {
                        Log.e("BAD", "Something went wrong making an SDK call: ", e);
                        Toaster.l(MainActivity.this, "Uh oh, something went wrong.");
                        }
                });


            }

        @Override
        public boolean onCreateOptionsMenu(Menu menu)
            {
            // Inflate the menu; this adds items to the action bar if it is present.
            getMenuInflater().inflate(R.menu.menu_main, menu);
            return true;
            }

        @Override
        public boolean onOptionsItemSelected(MenuItem item)
            {
            // Handle action bar item clicks here. The action bar will
            // automatically handle clicks on the Home/Up button, so long
            // as you specify a parent activity in AndroidManifest.xml.
            int id = item.getItemId();

            //noinspection SimplifiableIfStatement
            if (id == R.id.action_settings)
                {
                    return true;
                }

            return super.onOptionsItemSelected(item);
            }
    }
2

nevermind, I was missing ParticleCloudSDK.init()

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