Entagged - The Musical Box

Editing a tag in Java and committing the changes does not work. There is an
exception in one of the Java Libraries (using the SQLDataSource for some
reason?):

Caused by: java.lang.NullPointerException at
miage.sgbd.Connexion.resultsetUnEntier(Connexion.java:87) at
miage.sgbd.SqlProvider.getDossierID(SqlProvider.java:198) at
miage.sgbd.DataProvider.insererDossier(DataProvider.java:148) at
miage.sgbd.DataProvider.getFichierID(DataProvider.java:107) at
entagged.audioformats.AudioFileIO.write(AudioFileIO.java:151) at
entagged.audioformats.AudioFile.commit(AudioFile.java:78)

Only items edited are the title, author, and comment...