Ubuntu 15.04/ Serviio 1.5.2 does not add files to library

Hi guys,

After I upgraded to Ubuntu 15.04 my Serviio 1.5.1 stopped working. I uninstalled and re-installed v1.5.2 following the instructions found on the wiki
http://wiki.serviio.org/doku.php?id=how ... buntu15-04

Everything seems to work fine. Serviio automatically starts on system start. My TV (NMR Philips (2010) is found and displayed in the console and on my TV I can find the server showing the standard folders. Now when adding new folders that contain pictures, music and videos those are not showing up when I search my PC from the TV. It only shows the folders that I am adding but not the content (actual multi media files).

When checking the log file I can see the following warnings:
2015-05-26 10:26:46,088 WARN [prefs] Couldn't flush user prefs: java.util.prefs.BackingStoreException: Couldn't get file lock.
2015-05-26 10:27:16,087 WARN [prefs] Could not lock User prefs. Unix error code 2.

:~$ java -version
Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar
openjdk version "1.8.0_45-internal"
OpenJDK Runtime Environment (build 1.8.0_45-internal-b14)
OpenJDK 64-Bit Server VM (build 25.45-b02, mixed mode)

Can anyone help me finding the root cause of this?

Thanks in advance

[zip]

Most likely an access rights issue. The user that runs Serviio server needs to have read access to the shared folders.