Cluster Failure (no replies)

Hello we have a big problem. Our Cluster kill one node after the other and we donn't know why: following is in the log files:

error:
Time: Sunday 10 November 2013 - 01:00:54
Status: Temporary error, restart node
Message: System error, node killed during node restart by other node (Internal error, programming error or missing error message, please report a bug)
Error: 2303
Error data: Node 4 killed this node because GCP stop was detected
Error object: NDBCNTR (Line: 276) 0x00000002
Program: D:\MySQL\bin\ndbmtd.exe
Pid: 2240 thr: 0
Version: mysql-5.1.56 ndb-7.1.14
Trace: D:\MySQL_Data\ndb_data\ndb_4_trace.log.8 D:\MySQL_Data\
\ndb_da

trace:


2013-11-10 01:00:54 [ndbd] ALERT -- Node 4: Forced node shutdown completed. Caused by error 2303: 'System error, node killed during node restart by other node(Internal error, programming error or missing error message, please report a bug). Temporary error, restart node'.
2013-11-10 11:42:56 [ndbd] INFO -- Angel pid: 58024 started child: 53812

But what is the meaning of that????