Application crashing during OAuth authentication with Twitter - twitter

Question

I am writing an OAuth Twitter app
I get these errors all time:
" The user has not given access to the account. "
My Issue is that my app is crashing after user has authorized the app and login is successfull and Twitter is redirecting to the call back URL (which returns to a twitter home timeline in my app) the app crashes. What could be the reason?
05-02 06:10:09.404: E/AndroidRuntime(570): FATAL EXCEPTION: main
05-02 06:10:09.404: E/AndroidRuntime(570): java.lang.RuntimeException: Unable to authorize user
05-02 06:10:09.404: E/AndroidRuntime(570): at com.oreilly.android.otweet.OTweetApplication.authorized(OTweetApplication.java:57)
05-02 06:10:09.404: E/AndroidRuntime(570): at com.oreilly.android.otweet.activities.AuthorizationActivity$1.onLoadResource(AuthorizationActivity.java:28)
05-02 06:10:09.404: E/AndroidRuntime(570): at android.webkit.CallbackProxy.handleMessage(CallbackProxy.java:374)
05-02 06:10:09.404: E/AndroidRuntime(570): at android.os.Handler.dispatchMessage(Handler.java:99)
05-02 06:10:09.404: E/AndroidRuntime(570): at android.os.Looper.loop(Looper.java:130)
05-02 06:10:09.404: E/AndroidRuntime(570): at android.app.ActivityThread.main(ActivityThread.java:3683)
05-02 06:10:09.404: E/AndroidRuntime(570): at java.lang.reflect.Method.invokeNative(Native Method)
05-02 06:10:09.404: E/AndroidRuntime(570): at java.lang.reflect.Method.invoke(Method.java:507)
05-02 06:10:09.404: E/AndroidRuntime(570): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
05-02 06:10:09.404: E/AndroidRuntime(570): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
05-02 06:10:09.404: E/AndroidRuntime(570): at dalvik.system.NativeStart.main(Native Method)
05-02 06:10:09.404: E/AndroidRuntime(570): Caused by: twitter4j.TwitterException: The user has not given access to the account.
05-02 06:10:09.404: E/AndroidRuntime(570): at twitter4j.http.OAuthAuthorization.getOAuthAccessToken(OAuthAuthorization.java:133)
05-02 06:10:09.404: E/AndroidRuntime(570): at twitter4j.Twitter.getOAuthAccessToken(Twitter.java:1460)
05-02 06:10:09.404: E/AndroidRuntime(570): at com.oreilly.android.otweet.OTweetApplication.authorized(OTweetApplication.java:54)
05-02 06:10:09.404: E/AndroidRuntime(570): ... 10 more
05-02 06:10:09.404: E/AndroidRuntime(570): Caused by: twitter4j.TwitterException: 401:Authentication credentials were missing or incorrect.
05-02 06:10:09.404: E/AndroidRuntime(570): <?xml version="1.0" encoding="UTF-8"?>
05-02 06:10:09.404: E/AndroidRuntime(570): <hash>
05-02 06:10:09.404: E/AndroidRuntime(570): <error>Required oauth_verifier parameter not provided</error>
05-02 06:10:09.404: E/AndroidRuntime(570): <request>/oauth/access_token</request>
05-02 06:10:09.404: E/AndroidRuntime(570): </hash>
05-02 06:10:09.404: E/AndroidRuntime(570): at twitter4j.internal.http.HttpClient.request(HttpClient.java:324)
05-02 06:10:09.404: E/AndroidRuntime(570): at twitter4j.internal.http.HttpClientWrapper.request(HttpClientWrapper.java:68)
05-02 06:10:09.404: E/AndroidRuntime(570): at twitter4j.internal.http.HttpClientWrapper.post(HttpClientWrapper.java:107)
05-02 06:10:09.404: E/AndroidRuntime(570): at twitter4j.http.OAuthAuthorization.getOAuthAccessToken(OAuthAuthorization.java:130)
05-02 06:10:09.404: E/AndroidRuntime(570): ... 12 more
05-02 06:10:09.667: D/dalvikvm(570): GC_CONCURRENT freed 479K, 48% free 3249K/6215K, external 884K/1038K, paused 12ms+22ms
05-02 06:15:09.503: I/Process(570): Sending signal. PID: 570 SIG: 9