NoClassDefFoundError: android.support.multidex.MultiDex after adding Amazon Insights SDK

I use multiDex support lib in my project:

    compile 'com.android.support:multidex:1.0.0'
    ..
    @Override
    protected void attachBaseContext(Context base) {
    super.attachBaseContext(base);
    MultiDex.install(this);
}

It work fine, but after adding Amazon A/B Testing SDK I've got NoClassDefFoundError exception.

12-24 11:20:26.160  27296-27296/com.com.pack E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.NoClassDefFoundError: android.support.multidex.MultiDex
        at com.com.pack.App.PPApplication.attachBaseContext(PPApplication.java:51)
        at android.app.Application.attach(Application.java:181)
        at android.app.Instrumentation.newApplication(Instrumentation.java:991)
        at android.app.Instrumentation.newApplication(Instrumentation.java:975)
        at android.app.LoadedApk.makeApplication(LoadedApk.java:509)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4439)
        at android.app.ActivityThread.access$1500(ActivityThread.java:144)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1265)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:136)
        at android.app.ActivityThread.main(ActivityThread.java:5139)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:796)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612)
        at dalvik.system.NativeStart.main(Native Method)