Firstly 2014-11-07 19:40:59 28122 (i)2581537 Resending StartCore message to master (vhost: vhostnamehere, app: , inst: , tag: _2). is an information and not an error This message is emitted if a core process was requested to start but has not started for last over 30 seconds(determined by CoreTimeout in Server.xml).You may try to increase that time limit. When a request is received by server and no core is available for that, the AMS would start a new core, and that request will be blocked till the time core is started(up and running). That said, i admit i do not know why your core is getting stuck.
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