error in WebDAV directory listing?

[gnyce]

Using 3.3g CE, getting an error when listing the contents of a few share sites' documentLibrary folders (and underneath)… "An error occurred whilst generating the directory listing, please contact the system administrator" on the generated web-page.  It is not able to list the entire contents of the folder in question.  This has happened on several different folders within a site.  The alfresco.log posts an error msg at the same time:  21:01:58,144 ERROR [org.alfresco.webdav.protocol] java.lang.NullPointerException

Can anyone else confirm/duplicate?  I filed a JIRA ticket - https://issues.alfresco.com/jira/browse/ALF-3217

[gnyce]

This seems to be related to Excel/XLS files, for some reason.  If I delete (from Alfresco) the XLS files, it works fine.  Adding them back in to the Site, it still works.  So something related to the upgrade perhaps (this is a 3.2 site upgraded to 3.3g)?  Not sure what to think but at least can pin it down to a file-type, and not Alfresco/webdav implementation as a whole….