IllegalStateException: Can not perform this action after onSaveInstanceState with ViewPager

I’m getting user reports from my app in the market, delivering the following exception: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState at android.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1109) at android.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:399) at android.app.Activity.onBackPressed(Activity.java:2066) at android.app.Activity.onKeyUp(Activity.java:2044) at android.view.KeyEvent.dispatch(KeyEvent.java:2529) at android.app.Activity.dispatchKeyEvent(Activity.java:2274) at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1803) at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112) at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112) at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112) at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchKeyEvent(PhoneWindow.java:1855) at com.android.internal.policy.impl.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1277) at android.app.Activity.dispatchKeyEvent(Activity.java:2269) at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1803) at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112) at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112) at … Read more