error locking config file

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MinimServer 0.8.3 update 65, Copyright © 2012-2015 Simon Nash. All rights reserved.
Java™ SE Embedded Runtime Environment (build 1.8.0-b132)
Java HotSpot™ Embedded Client VM (build 25.0-b70, mixed mode)
Platform default charset is UTF-8
MinimServer: error locking config file
MinimServer error: now stopped, use 'restart' or 'exit'

Currently i have MinimServer-0.8.3b-armv5.spk version.