i added a shared_prefs check in LocationReceiver.java that checks to see if facebook has been authorized by checking for the saved access_token. from my test this has fixed the chrashing issue i metioned before.

TravelPost/src/com/TwentyCodes/android/TravelPost/LocationReceiver.java

@@ -88,17 +88,17 @@ public class LocationReceiver extends BroadcastReceiver{
 			e.printStackTrace();
 		}
 		
+		//if there is a facebook authization, then post!
+		if (mContext.getSharedPreferences("facebook-session.xml", 0).getString("access_token", null)  != null) {
 			//post to facebook
 			FacebookAuth fbAuth = new FacebookAuth(mContext, new Activity());
 			fbAuth.authorize();
-		if(fbAuth.isSessionValid())
 			try {
 				fbAuth.postToWall(thePost);
 			} catch (SessionNotValidException e) {
 				e.printStackTrace();
 			}
-		else
-			Log.d(TravelPost.TAG, "cant post to FB, not auth'd");
+		}
 		
 	}