Missing sources, Unicode incorrect, How to export/import?

As shown in attachment

Serviio.jpg (160.72 KiB) Viewed 5137 times

I Checked stream URL, Added and Saved 49 Live Streams in Online sources Library.
The problems are,
1. Only first 20 of them are shown in my Panasonic P50ST50 (I finished adding yesterday night, it is still the same this morning)
2. Unicode characters are shown correctly in Display name, but incorrectly in Online sources Source Name list.
3. Also, may I ask, how can I export/import Live Streams and other settings so that I can uninstall Serviio and then re-install?

Had a look at serviio.log, possilby the following error is related to problem 1: missing sources.

2012-11-15 21:59:25,090 ERROR [ContainerNode] Cannot retrieve results of action command: Cannot execute library command for list: null
org.serviio.upnp.service.contentdirectory.command.CommandExecutionException: Cannot execute library command for list: null
at org.serviio.upnp.service.contentdirectory.command.AbstractCommand.retrieveItemList(AbstractCommand.java:135)
at org.serviio.upnp.service.contentdirectory.definition.ContainerNode.executeListAction(ContainerNode.java:242)
at org.serviio.upnp.service.contentdirectory.definition.ContainerNode.findContainerItems(ContainerNode.java:182)
at org.serviio.upnp.service.contentdirectory.definition.ContainerNode.retrieveContainerItems(ContainerNode.java:83)
at org.serviio.upnp.service.contentdirectory.ContentDirectoryEngine.browse(ContentDirectoryEngine.java:102)
at org.serviio.upnp.service.contentdirectory.ContentDirectory.Browse(ContentDirectory.java:152)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.serviio.upnp.protocol.soap.ServiceInvoker.invokeOperation(ServiceInvoker.java:253)
at org.serviio.upnp.protocol.soap.ServiceInvoker.invokeService(ServiceInvoker.java:93)
at org.serviio.upnp.webserver.ServiceControlRequestHandler.handleRequest(ServiceControlRequestHandler.java:66)
at org.serviio.upnp.webserver.AbstractRequestHandler.handle(AbstractRequestHandler.java:61)
at org.apache.http.protocol.HttpService.doService(HttpService.java:293)
at org.serviio.upnp.webserver.ServiioHttpService.doService(ServiioHttpService.java:58)
at org.apache.http.protocol.HttpService.handleRequest(HttpService.java:212)
at org.serviio.upnp.webserver.WebServer$WorkerThread.run(WebServer.java:191)
Caused by: java.lang.NullPointerException
at org.serviio.dlna.MediaFormatProfileResolver.resolveVideoMPEG2TSFormat(MediaFormatProfileResolver.java:258)
at org.serviio.dlna.MediaFormatProfileResolver.resolveVideoFormat(MediaFormatProfileResolver.java:100)
at org.serviio.dlna.MediaFormatProfileResolver.resolve(MediaFormatProfileResolver.java:48)
at org.serviio.delivery.resource.VideoDeliveryEngine.retrieveOriginalMediaInfo(VideoDeliveryEngine.java:79)
at org.serviio.delivery.resource.VideoDeliveryEngine.retrieveOriginalMediaInfo(VideoDeliveryEngine.java:45)
at org.serviio.delivery.resource.AbstractDeliveryEngine.getMediaInfoForProfile(AbstractDeliveryEngine.java:70)
at org.serviio.delivery.MediaResourceRetrievalStrategy.getMediaInfoForAvailableProfiles(MediaResourceRetrievalStrategy.java:74)
at org.serviio.upnp.service.contentdirectory.command.ResourceValuesBuilder.buildResources(ResourceValuesBuilder.java:58)
at org.serviio.upnp.service.contentdirectory.command.AbstractListOnlineObjectsByHierarchyCommand.retrieveList(AbstractListOnlineObjectsByHierarchyCommand.java:126)
at org.serviio.upnp.service.contentdirectory.command.AbstractCommand.retrieveItemList(AbstractCommand.java:129)
... 17 more

3. Also, may I ask, how can I export/import Live Streams and other settings so that I can uninstall Serviio and then re-install?

for export/import Serviio repository you may want to look at REST API.

Thank you so much, miksa. You saved me lots of work.
http://<pc5dczc_server_ip>:23424/rest/repository