Error on import FacebookSDK - facebook-android-sdk

Question

I downloaded Facebook API 3.0 and I imported it to Eclipse (Helion). I created new project of my app (called HAN Communication) and I tried to add as library FacebookSDK. But after this I seen this error(s) :
[2013-02-03 11:28:06 - HANCommunication] Found 2 versions of android-support-v4.jar in the dependency list,
[2013-02-03 11:28:06 - HANCommunication] but not all the versions are identical (check is based on SHA-1 only at this time).
[2013-02-03 11:28:06 - HANCommunication] All versions of the libraries must be the same at this time.
[2013-02-03 11:28:06 - HANCommunication] Versions found are:
[2013-02-03 11:28:06 - HANCommunication] Path: D:\facebook-android-sdk-3.0\facebook-android-sdk-3.0\facebook\libs\android-support-v4.jar
[2013-02-03 11:28:06 - HANCommunication] Length: 349252
[2013-02-03 11:28:06 - HANCommunication] SHA-1: 612846c9857077a039b533718f72db3bc041d389
[2013-02-03 11:28:06 - HANCommunication] Path: D:\workspace\space\HANCommunication\libs\android-support-v4.jar
[2013-02-03 11:28:06 - HANCommunication] Length: 385685
[2013-02-03 11:28:06 - HANCommunication] SHA-1: 48c94ae70fa65718b382098237806a5909bb096e
[2013-02-03 11:28:06 - HANCommunication] Jar mismatch! Fix your dependencies
[2013-02-03 11:29:17 - HANCommunication] Found 2 versions of android-support-v4.jar in the dependency list,
[2013-02-03 11:29:17 - HANCommunication] but not all the versions are identical (check is based on SHA-1 only at this time).
[2013-02-03 11:29:17 - HANCommunication] All versions of the libraries must be the same at this time.
[2013-02-03 11:29:17 - HANCommunication] Versions found are:
[2013-02-03 11:29:17 - HANCommunication] Path: D:\facebook-android-sdk-3.0\facebook-android-sdk-3.0\facebook\libs\android-support-v4.jar
[2013-02-03 11:29:17 - HANCommunication] Length: 349252
[2013-02-03 11:29:17 - HANCommunication] SHA-1: 612846c9857077a039b533718f72db3bc041d389
[2013-02-03 11:29:17 - HANCommunication] Path: D:\workspace\space\HANCommunication\libs\android-support-v4.jar
[2013-02-03 11:29:17 - HANCommunication] Length: 385685
[2013-02-03 11:29:17 - HANCommunication] SHA-1: 48c94ae70fa65718b382098237806a5909bb096e
[2013-02-03 11:29:17 - HANCommunication] Jar mismatch! Fix your dependencies
[2013-02-03 11:34:45 - HANCommunication] Found 2 versions of android-support-v4.jar in the dependency list,
[2013-02-03 11:34:45 - HANCommunication] but not all the versions are identical (check is based on SHA-1 only at this time).
[2013-02-03 11:34:45 - HANCommunication] All versions of the libraries must be the same at this time.
[2013-02-03 11:34:45 - HANCommunication] Versions found are:
[2013-02-03 11:34:45 - HANCommunication] Path: D:\facebook-android-sdk-3.0\facebook-android-sdk-3.0\facebook\libs\android-support-v4.jar
[2013-02-03 11:34:45 - HANCommunication] Length: 349252
[2013-02-03 11:34:45 - HANCommunication] SHA-1: 612846c9857077a039b533718f72db3bc041d389
[2013-02-03 11:34:45 - HANCommunication] Path: D:\workspace\space\HANCommunication\libs\android-support-v4.jar
[2013-02-03 11:34:45 - HANCommunication] Length: 385685
[2013-02-03 11:34:45 - HANCommunication] SHA-1: 48c94ae70fa65718b382098237806a5909bb096e
[2013-02-03 11:34:45 - HANCommunication] Jar mismatch! Fix your dependencies
My manifest :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.radzik.hancommunication"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="16" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.radzik.hancommunication.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
I tried to change target API version, but this isn't helpful for me.
Thanks,

Answer 1

Check the libs directory in your app project folder. If there is a android-support-v4.jar in there, this is the cause of the error. Facebook SDK has included a version of this jar already and apparently they don't match. I solved this problem by removing the jar from my app project.
I suspect the cause of the mismatch is that the android SDK jar has been updated since the one the SDK was developed with.