Q:

Two versions of android support-v4

I'm trying to import actionbarcherlok project inside my project (actionbarsherlok is a project marked with "is library")
My project includes yet support-v4 library, so when I import sherlock action bar (that also includes support-v4 library) I obtains the following error:
 Found 2 versions of android-support-v4.jar in the dependency list,
 but not all the versions are identical (check is based on SHA-1 only at this time).

That means I have to remove one library.
I have removed the support-v4 library that was already in my project, but I obratin an error at this line
public class ReminderCreation extends FragmentActivity{

because FragmentActivity was taken from support-v4 library:
android.support.v4.app.FragmentActivity

I can I solve this problem? Can I refer to the support-v4 library included in the sherlock project?
NOTE: 
I have also tryied changing FramentActivity into SherlokFragmentactivity, obtaining this error:
The hierarchy of the type ReminderCreation is inconsistent.

EDIT:
If I introduce this modification (suggested by @ascorbin) and I otain this error at runtime:
10-17 09:30:12.190: E/dalvikvm(1877): Could not find class 'com.nostra13.universalimageloader.core.ImageLoaderConfiguration$Builder', referenced from method host.framework.ApplicationFramework.onCreate
10-17 09:30:12.190: W/dalvikvm(1877): VFY: unable to resolve new-instance 489 (Lcom/nostra13/universalimageloader/core/ImageLoaderConfiguration$Builder;) in Lhost/framework/ApplicationFramework;
10-17 09:30:12.190: E/AndroidRuntime(1877): FATAL EXCEPTION: main
10-17 09:30:12.190: E/AndroidRuntime(1877): java.lang.NoClassDefFoundError: com.nostra13.universalimageloader.core.ImageLoaderConfiguration$Builder

at this line:
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getApplicationContext())

inside a class that extends Application
(I have never get this error before)

A:

The error didn't mean that you had to delete one support-jar but that they all have to be the same version. Delete the support library from both projects, then right-click -> android -> add support library for both, then they'll both have the same jar. 

