title: The project cannot be built until build path errors are resolved
body: <p>i dowloaded from here: </p>
  
  <p><a href="http://sourceforge.net/projects/redpin/files/release-3.1/RedpinAndroid.zip/download" rel="nofollow noreferrer">http://sourceforge.net/projects/redpin/files/release-3.1/RedpinAndroid.zip/download</a> </p>
  
  <p>i am using win8, ECLİPSE eclipse-standard-kepler-SR1-win32</p>
  
  <p>i imported project and googled this problem. I tried project > clean section , it didnt work.
  and also i tried properties > java build path > add library > jre system library for adding redpind library , it didnt work either. how can i solve this problem? thank you.</p>
  
  <p>errors is:</p>
  
  <p><strong>The project cannot be built until build path errors are resolved</strong></p>
  
  <p><strong>Project 'RedpinAndroid' is missing required Java project: 'RedpinCore'</strong></p>
  
  <p><img src="https://i.stack.imgur.com/r1gqq.png" alt="enter image description here">
  <strong>these are classes</strong>
  <img src="https://i.stack.imgur.com/ErSHI.png" alt="enter image description here">
  <strong>this is properties>buildpath</strong>
  <img src="https://i.stack.imgur.com/2enEk.png" alt="enterd image description here">
  <strong>this is error page</strong></p>