An error occurred while importing content

Hi,

in the loader-messages.log I get the following error:

[DEBUG] [1/11/13 12:10:36 PM] [] [ImportContent] [105] [] [Done processing: c04b9cd07e9e41c29820e88463437eea] [] []
[DEBUG] [1/11/13 12:10:36 PM] [] [ImportContent] [105] [] [An error occurred while importing content: c04b9cd07e9e41c29820e88463437eea] [] []
[DEBUG] [1/11/13 12:10:36 PM] [] [ImportContent] [105] [] [java.lang.NullPointerException
at com.novell.zenworks.content.ImportContent.deleteSu bdirectories(ImportContent.java:1168)
at com.novell.zenworks.content.ImportContent.deleteIn putFiles(ImportContent.java:1199)
at com.novell.zenworks.content.ImportContent.importCo ntent(ImportContent.java:775)
at com.novell.zenworks.content.ImportContent.run(Impo rtContent.java:1029)
at java.util.concurrent.ThreadPoolExecutor$Worker.run Task(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
] [] []

Has anyone an explanation?
(Zenworks 11.2 MU1)