I’m trying to get ActionBarSherlock and the ViewPagerIndicator libraries set up for my projects, but I seem to be running into a few issues. I sent Jake Wharton (The developer) a few messages earlier about it, and got a few replies but couldn’t get anywhere – and I think he got busy with a few other things.
What my issue is, For both VPI and ABS

Both libraries open up without any errors, and I’m using compiler version 1.6 for all as is required.
The funny thing is, if I load in the samples that are provided – they work fine and link to his library; but when I go to add the library to my project – the above happens.
Where to store the actual library project does not matter, as long as you use a relative link to reference it. Check out the Library Projects – Development considerations:
You should always use the Eclipse ADT plugin to select and set up Library Project Reference, i.e. right-click project -> Properties -> Android -> Add, then in the opened Project Selection window, select the Library Project list here (of cause you should import them in the same Eclipse workspace as your Main Project). This will add a android.library.reference using relative path into project.properties as well as show relative path in the Android preference window:
If you directly alter it using absolute path from project.properties as below:
Then after Eclipse refresh your project, you get the exact error described in your question, see my screenshot below:

Hope this helps.