Serviio 1.4.1.2 not preventing sleep on W7 any more?

I've recently noticed that Serviio is no longer preventing Windows from shutting down whilst streaming any more? It's shut down twice whilst streaming now.
I've never had issues before, running said version on Win7 64 bit with Java 7 Update 55.
The logs really don't say much:
Anyone any ideas?
I've never had issues before, running said version on Win7 64 bit with Java 7 Update 55.
The logs really don't say much:
- Code:
2014-07-18 12:12:05,517 INFO [DiscoveryManager] System wake up detected, restarting UPnP services for network re-discovery
2014-07-18 12:12:09,329 INFO [UpdateChecker] Checking if a new version is available
2014-07-18 12:12:09,485 INFO [DiscoveryAdvertisementNotifier] Leaving DiscoveryAdvertisementNotifier
2014-07-18 12:12:09,906 INFO [DiscoverySSDPMessageListener] Leaving DiscoverySSDPMessageListener
2014-07-18 12:12:09,906 INFO [EventDispatcher] Leaving EventDispatcher
2014-07-18 12:12:09,906 INFO [EventSubscriptionExpirationChecker] Leaving EventSubscriptionExpirationChecker, removing all event subscriptions
2014-07-18 12:12:10,124 WARN [MultiCastUtils] Could not find NIC with name 'eth3-0'
2014-07-18 12:12:10,124 WARN [LocalAddressResolverStrategy] Haven't found IP address for NIC eth3-0, will try again 9 times
2014-07-18 12:12:10,187 WARN [MultiCastUtils] Could not find NIC with name 'eth3-0'
2014-07-18 12:12:10,187 WARN [LocalAddressResolverStrategy] Haven't found IP address for NIC eth3-0, will try again 8 times
2014-07-18 12:12:15,491 INFO [Device] Updated bound IP address of Device with UUID: 6abd6656-330d-34bc-8480-58290724adb1, bound address: 192.168.1.50
2014-07-18 12:12:15,491 INFO [DiscoveryAdvertisementNotifier] Starting DiscoveryAdvertisementNotifier
2014-07-18 12:12:15,491 INFO [EventSubscriptionExpirationChecker] Starting EventSubscriptionExpirationChecker
2014-07-18 12:12:15,538 INFO [EventDispatcher] Starting EventDispatcher
2014-07-18 12:12:15,662 INFO [DiscoverySSDPMessageListener] Starting DiscoverySSDPMessageListener using interface eth3 (Atheros AR8121/AR8113/AR8114 PCI-E Ethernet Controller) and address 192.168.1.50, timeout = 0
2014-07-18 17:42:27,513 INFO [DiscoveryManager] System wake up detected, restarting UPnP services for network re-discovery
2014-07-18 17:42:31,179 INFO [DiscoverySSDPMessageListener] Leaving DiscoverySSDPMessageListener
2014-07-18 17:42:31,179 INFO [EventSubscriptionExpirationChecker] Leaving EventSubscriptionExpirationChecker, removing all event subscriptions
2014-07-18 17:42:31,191 INFO [EventDispatcher] Leaving EventDispatcher
2014-07-18 17:42:31,214 INFO [DiscoveryAdvertisementNotifier] Leaving DiscoveryAdvertisementNotifier
2014-07-18 17:42:31,653 INFO [Device] Updated bound IP address of Device with UUID: 6abd6656-330d-34bc-8480-58290724adb1, bound address: 192.168.1.50
2014-07-18 17:42:31,684 INFO [DiscoveryAdvertisementNotifier] Starting DiscoveryAdvertisementNotifier
2014-07-18 17:42:31,699 WARN [MultiCastUtils] Host IP address 192.168.1.50 is not available, will try again 9 times
2014-07-18 17:42:31,699 INFO [EventDispatcher] Starting EventDispatcher
2014-07-18 17:42:31,699 INFO [EventSubscriptionExpirationChecker] Starting EventSubscriptionExpirationChecker
2014-07-18 17:42:31,825 WARN [MultiCastUtils] Host IP address 192.168.1.50 is not available, will try again 9 times
2014-07-18 17:42:36,739 INFO [EventDispatcher] Leaving EventDispatcher
2014-07-18 17:42:36,739 INFO [EventSubscriptionExpirationChecker] Leaving EventSubscriptionExpirationChecker, removing all event subscriptions
2014-07-18 17:42:36,802 INFO [Device] Updated bound IP address of Device with UUID: 6abd6656-330d-34bc-8480-58290724adb1, bound address: 192.168.1.50
2014-07-18 17:42:36,802 INFO [DiscoverySSDPMessageListener] Starting DiscoverySSDPMessageListener using interface eth3 (Atheros AR8121/AR8113/AR8114 PCI-E Ethernet Controller) and address 192.168.1.50, timeout = 0
2014-07-18 17:42:36,802 INFO [DiscoveryAdvertisementNotifier] Starting DiscoveryAdvertisementNotifier
2014-07-18 17:42:36,802 INFO [EventSubscriptionExpirationChecker] Starting EventSubscriptionExpirationChecker
2014-07-18 17:42:36,817 INFO [EventDispatcher] Starting EventDispatcher
2014-07-18 17:42:36,833 INFO [Device] Updated bound IP address of Device with UUID: 6abd6656-330d-34bc-8480-58290724adb1, bound address: 192.168.1.50
2014-07-18 17:42:36,833 INFO [EventSubscriptionExpirationChecker] Starting EventSubscriptionExpirationChecker
2014-07-18 17:42:36,833 INFO [DiscoveryAdvertisementNotifier] Starting DiscoveryAdvertisementNotifier
2014-07-18 17:42:36,833 INFO [EventDispatcher] Starting EventDispatcher
Anyone any ideas?