Some valid HQL query can fail when executed through the query manager component

$xwiki.searchDocuments(", BaseObject as groupObj, BaseObject as accountObj, StringProperty as memberProp where doc.fullName=groupObj.name and groupObj.className='XWiki.XWikiGroups' and doc.fullName=accountObj.name and accountObj.className='XNCode.AccountClass' and groupObj.id=memberProp.id.id and memberProp.id.name='member' and memberProp.value='XWiki.jvdrean'")

$xwiki.queryManager.createQuery(", BaseObject as groupObj, BaseObject as accountObj, StringProperty as memberProp where doc.fullName=groupObj.name and groupObj.className='XWiki.XWikiGroups' and doc.fullName=accountObj.name and accountObj.className='XNCode.AccountClass' and groupObj.id=memberProp.id.id and memberProp.id.name='member' and memberProp.value='XWiki.jvdrean'", "hql").execute()

Wrapped Exception: node to traverse cannot be null!
        at com.xpn.xwiki.store.XWikiHibernateBaseStore.execute(XWikiHibernateBaseStore.java:1069)
        at com.xpn.xwiki.store.XWikiHibernateBaseStore.executeRead(XWikiHibernateBaseStore.java:1099)
        at com.xpn.xwiki.store.hibernate.query.HqlQueryExecutor.execute(HqlQueryExecutor.java:88)
        ... 144 more