Crash in emulator Nexus One Api 22 5.1.1

[dabitdev]

is it happening 100% of times (not verified in a real device)
build 2.0.7.5
1 clearWallet if there is an existing one
2 start app
3 create 12 or 24
4 crash

02-14 13:53:31.768 6023-6023/com.blockeq.stellarwallet E/MnemonicActivity: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.blockeq.stellarwallet/com.blockeq.stellarwallet.activities.WalletManagerActivity}; have you declared this activity in your AndroidManifest.xml?
        at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1777)
        at android.app.Instrumentation.execStartActivity(Instrumentation.java:1501)
        at android.app.Activity.startActivityForResult(Activity.java:3745)
        at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:767)
        at android.app.Activity.startActivityForResult(Activity.java:3706)
        at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:754)
        at android.app.Activity.startActivity(Activity.java:4016)
        at android.app.Activity.startActivity(Activity.java:3984)
        at com.blockeq.stellarwallet.activities.MnemonicActivity.onClick(MnemonicActivity.kt:72)
        at android.view.View.performClick(View.java:4780)
        at android.view.View$PerformClick.run(View.java:19866)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5254)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)