Null pointer in JRCS module through XWikiRCSArchive

18:41:40,442 [http://localhost:8080/xwiki/bin/import/XWiki/Import?editor=import&space=XWiki] [http-8080-Processor23] DEBUG api.MonitorData                 - MONITOR XWiki.Import import hibernate: 0ms null 

18:41:40,629 [http://localhost:8080/xwiki/bin/import/XWiki/Import?editor=import&space=XWiki] [http-8080-Processor23] ERROR packaging.Package               - Failed to delete document XWiki.XWikiPreferences 

18:41:40,629 [http://localhost:8080/xwiki/bin/import/XWiki/Import?editor=import&space=XWiki] [http-8080-Processor23] DEBUG packaging.Package               - Failed to delete document XWiki.XWikiPreferences 

java.lang.NullPointerException

	at org.suigeneris.jrcs.rcs.impl.Node.setLog(Node.java:301)

	at com.xpn.xwiki.doc.rcs.XWikiRCSArchive.<init>(XWikiRCSArchive.java:77)

	at com.xpn.xwiki.doc.XWikiDocumentArchive.getArchive(XWikiDocumentArchive.java:179)

	at com.xpn.xwiki.doc.XWikiDocument.toXMLDocument(XWikiDocument.java:2245)

	at com.xpn.xwiki.doc.XWikiDocument.toXML(XWikiDocument.java:2086)

	at com.xpn.xwiki.doc.XWikiDocument.toFullXML(XWikiDocument.java:2055)

	at com.xpn.xwiki.doc.XWikiDeletedDocument.setDocument(XWikiDeletedDocument.java:182)

	at com.xpn.xwiki.doc.XWikiDeletedDocument.<init>(XWikiDeletedDocument.java:85)

	at com.xpn.xwiki.store.XWikiHibernateRecycleBinStore.saveToRecycleBin(XWikiHibernateRecycleBinStore.java:54)

	at com.xpn.xwiki.XWiki.deleteDocument(XWiki.java:3249)

	at com.xpn.xwiki.XWiki.deleteDocument(XWiki.java:3241)

	at com.xpn.xwiki.plugin.packaging.Package.installDocument(Package.java:560)

	at com.xpn.xwiki.plugin.packaging.Package.install(Package.java:517)

	at com.xpn.xwiki.plugin.packaging.PackageAPI.install(PackageAPI.java:197)

	at com.xpn.xwiki.web.ImportAction.render(ImportAction.java:89)

	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:148)

	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)

	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)