Unable to write Flac file if directly access networked file rather than through mounted drive

[IJabz]

org.jaudiotagger.audio.exceptions.CannotReadException: \\CLOUD\Musik\Jazz\!ECM\Egberto Gismonti - Selected Recordings Rarum XI uc\(08) Frevo - Egberto Gismonti.flac:Unerwarteter Netzwerkfehler
    at org.jaudiotagger.audio.generic.AudioFileReader.read(AudioFileReader.java:117)
    at org.jaudiotagger.audio.AudioFileIO.readFile(AudioFileIO.java:354)
    at org.jaudiotagger.audio.AudioFileIO.read(AudioFileIO.java:194)
    at com.jthink.songkong.analyse.analyser.SongSaver.saveSongToFile(SongSaver.java:536)
    at com.jthink.songkong.analyse.analyser.SongSaver.saveChanges(SongSaver.java:159)
    at com.jthink.songkong.analyse.analyser.SongSaver.call(SongSaver.java:134)
    at com.jthink.songkong.analyse.analyser.SongSaver.call(SongSaver.java:52)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: Unerwarteter Netzwerkfehler
    at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
    at sun.nio.ch.FileDispatcherImpl.read(Unknown Source)
    at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source)
    at sun.nio.ch.IOUtil.read(Unknown Source)
    at sun.nio.ch.FileChannelImpl.read(Unknown Source)
    at org.jaudiotagger.audio.flac.metadatablock.MetadataBlockHeader.readHeader(MetadataBlockHeader.java:52)
    at org.jaudiotagger.audio.flac.FlacTagReader.read(FlacTagReader.java:66)
    at org.jaudiotagger.audio.flac.FlacFileReader.getTag(FlacFileReader.java:45)
    at org.jaudiotagger.audio.generic.AudioFileReader.read(AudioFileReader.java:106)
    ... 10 more