title: development appengine (HRD) instance throws EOFException when loading from backing store (local_db.bin)
body: <p>Since I have upgraded my GAE application to the HRD datastore, it does not work properly in my local development environment.
  It is possible to import data into the local backing store, and local_db.bin clearly contains data (judging from its size).
  Sometimes, I can then work with the local datastore.
  But always when I restart the GAE server, the backing store cannot be read, and the following exception is thrown:</p>
  
  <pre><code>INFO: Local Datastore initialized: 
      Type: High Replication
      Storage: [path removed]\local_db.bin
  [date time] com.google.appengine.api.datastore.dev.LocalDatastoreService load
  INFO: Failed to load from the backing store, [path removed]\war\WEB-INF\appengine-generated\local_db.bin
  java.io.EOFException
      at java.io.ObjectInputStream$BlockDataInputStream.readFully(ObjectInputStream.java:2699)
      at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1935)
      at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:479)
  ... more stacktrace lines ...
  </code></pre>
  
  <p>This occurs consistently. I am using App Engine SDK 1.7.4 and the Eclipse plugin. I am also using Objectify 3.1 for persistence.</p>
  
  <p>There was a similar question on the old (now closed) Google groups forum, but no answer, which is why I post this here.</p>
  
  <p>Does anyone have any idea why this is happening, and if there is a solution to this?</p>