Minim server stopped working

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Hi,

Minimum Server stopped working on my Synology DS2016j earlier this afternoon. The log text is as follows:

MinimServer 0.8.4, Copyright © 2012-2016 Simon Nash. All rights reserved.
Java™ SE Runtime Environment (build 1.8.0_101-b13)
Java HotSpot™ Client VM (build 25.101-b13, mixed mode)
Platform default charset is UTF-8
Integrity check failed for file minimserver.config
MinimServer failure: now stopped, use 'relaunch' or 'exit'
ending MinimServer

I have tried stopping and re-running MinimServer, but it remains greyed out in the Lumin control app on my iPad. Grateful for advice on what to do to get it working again.

Thanks,

Steve