ClassCastException is thrown when bumping in around 2% of cases

[doemski]

02-02 14:02:18.158 13895-14011/hs_mannheim.sysplace E/AndroidRuntime: FATAL EXCEPTION: Thread-855
                                                                      Process: hs_mannheim.sysplace, PID: 13895
                                                                      java.lang.ClassCastException: hs_mannheim.gestureframework.messaging.Packet.mPacketType - 
																		class hs_mannheim.gestureframework.messaging.Packet$PacketType not compatible with class hs_mannheim.gestureframework.gesture.bump.BumpAckPacket
                                                                          at java.io.ObjectInputStream.readFieldValues(ObjectInputStream.java:1124)
                                                                          at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:454)
                                                                          at java.io.ObjectInputStream.readObjectForClass(ObjectInputStream.java:1345)
                                                                          at java.io.ObjectInputStream.readHierarchy(ObjectInputStream.java:1242)
                                                                          at java.io.ObjectInputStream.readNewObject(ObjectInputStream.java:1835)
                                                                          at java.io.ObjectInputStream.readNonPrimitiveContent(ObjectInputStream.java:761)
                                                                          at java.io.ObjectInputStream.readObject(ObjectInputStream.java:1983)
                                                                          at java.io.ObjectInputStream.readObject(ObjectInputStream.java:1940)
                                                                          at hs_mannheim.gestureframework.connection.bluetooth.ConnectedThread.run(ConnectedThread.java:76)