Android Studio 1.1 preview 2 single test run NullPointerException

Just beware of nasty bug in Android Studio 1.1 preview 2 Any single test auto-generated configuration (via context menu Run/Debug method test for example) produces NullPointer exception with stacktrace

java.lang.NullPointerException
at org.jetbrains.android.run.testing.AndroidTestRunConfiguration.checkConfiguration(AndroidTestRunConfiguration.java:183)
at org.jetbrains.android.run.AndroidRunConfigurationBase.checkConfiguration(AndroidRunConfigurationBase.java:141)
at com.intellij.execution.impl.RunnerAndConfigurationSettingsImpl.checkSettings(RunnerAndConfigurationSettingsImpl.java:358)
at com.intellij.execution.impl.RunManagerImpl.canRunConfiguration(RunManagerImpl.java:524)
at com.intellij.execution.ProgramRunnerUtil.executeConfiguration(ProgramRunnerUtil.java:97)
at com.intellij.execution.ProgramRunnerUtil.executeConfiguration(ProgramRunnerUtil.java:73)
at com.intellij.execution.impl.ExecutionManagerImpl.start(ExecutionManagerImpl.java:398)
at com.intellij.execution.impl.ExecutionManagerImpl.access$400(ExecutionManagerImpl.java:61)
at com.intellij.execution.impl.ExecutionManagerImpl$4.run(ExecutionManagerImpl.java:375)
at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
at com.intellij.util.Alarm$Request$1.run(Alarm.java:327)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:319)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:697)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:524)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:335)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

Workarounds for now:

1) Execute all tests in package or All unit tests

2) Open test configuration and re-select class and method explicitly from dialogs after saving no issues with test run.