Create new index for a query

I am trying to create a new index for a slow query.  I've tried many variations of an oak:QueryIndexDefinition (tried both property and lucene types), but none seem to apply for this query.  Please help me understand this.

From the ACS Explain Query Tool:

{ "statement": "SELECT [fileReference] FROM [nt:unstructured] WHERE ISSAMENODE([/content/demo-spark/jcr:content/bgimage]) OR ISSAMENODE([/content/demo-spark/fr_FR/jcr:content/bgimage])", "language": "JCR-SQL2", "explain": { "logs": [ "cost using filter Filter(query=explain SELECT [fileReference] FROM [nt:unstructured] WHERE ISSAMENODE([/content/demo-spark/jcr:content/bgimage]) OR ISSAMENODE([/content/demo-spark/fr_FR/jcr:content/bgimage]), path=*)", "cost for aggregate lucene is Infinity", "Evaluating plan with index definition Lucene Index : /oak:index/damAssetLucene", "No applicable IndexingRule found for any of the superTypes [nt:unstructured, nt:base]", "Evaluating plan with index definition Lucene Index : authorizables(/oak:index/authorizables)", "No applicable IndexingRule found for any of the superTypes [nt:unstructured, nt:base]", "Evaluating plan with index definition Lucene Index : /oak:index/lucene", "Index is old format. Not supported", "Evaluating plan with index definition Lucene Index : cq:Page(/oak:index/cqPageLucene)", "No applicable IndexingRule found for any of the superTypes [nt:unstructured, nt:base]", "Evaluating plan with index definition Lucene Index : tags(/oak:index/ntBaseLucene)", "Applicable IndexingRule found IndexRule: nt:base", "Evaluating plan with index definition Lucene Index : cqTag(/oak:index/cqTagLucene)", "No applicable IndexingRule found for any of the superTypes [nt:unstructured, nt:base]", "Evaluating plan with index definition Lucene Index : workflow(/oak:index/workflowDataLucene)", "No applicable IndexingRule found for any of the superTypes [nt:unstructured, nt:base]", "cost for lucene-property is Infinity", "cost for reference is Infinity", "getPlans(Filter, List<OrderEntry>, NodeState)", "getPlans() - filter: Filter(query=explain SELECT [fileReference] FROM [nt:unstructured] WHERE ISSAMENODE([/content/demo-spark/jcr:content/bgimage]) OR ISSAMENODE([/content/demo-spark/fr_FR/jcr:content/bgimage]), path=*) - ", "getPlans() - sortOrder: null - ", "getPlans() - rootState: { jcr:primaryType = rep:root, jcr:mixinTypes = [rep:AccessControllable, rep:RepoAccessControllable], sling:target = /index.html, :childOrder = [bin, rep:repoPolicy, rep:policy, jcr:system, var, libs, etc, home, content, favicon.ico, system, apps, conf, tmp], sling:resourceType = sling:redirect, :async : { async-temp = [9995c2a6-3940-4e31-a8a4-5f0f4e11ced0, 40f256b6-a463-41e9-bdc7-8a1d5187da61], async = 9995c2a6-3940-4e31-a8a4-5f0f4e11ced0, async-LastIndexedTo = 2015-08-20T15:19:07.578Z }, tmp = { ... }, home = { ... }, favicon.ico = { ... }, :clusterConfig : { :clusterId = 101ee51d-0352-4933-96d5-e372aed2c867 }, oak:index = { ... }, conf = { ... }, jcr:system = { ... }, etc = { ... }, system = { ... }, content = { ... }, bin : { jcr:primaryType = nt:folder, jcr:mixinTypes = [mix:versionable], jcr:createdBy = admin, jcr:versionHistory = b636ebc7-cf9a-430f-a276-10706b37f8c4, jcr:predecessors = [], jcr:created = 2014-04-02T21:40:10.723Z, jcr:baseVersion = c3735025-3e64-4d0e-b132-9dc08d0193c1, jcr:isCheckedOut = false, jcr:uuid = 40ed38c9-cb13-41dc-8602-0249e2c1b4c2 }, rep:policy = { ... }, libs = { ... }, rep:repoPolicy = { ... }, var = { ... }, apps = { ... } } - ", "cost for ordered is Infinity", "cost for nodeType is Infinity", "cost for property is Infinity", "cost for traverse is 1303100.0" ], "plan": "[nt:unstructured] as [nt:unstructured] /* traverse \"*\" */", "traversal": true, "slow": true } }

/content/demo-spark/oak:index/fileReferenceLucene.-1.json:
(I've also tried creating this as a root index; /oak:index/fileReferenceLucene)

{ "jcr:primaryType": "oak:QueryIndexDefinition", "compatVersion": 2, "name": "nt:base/fileReference", "type": "lucene", "async": "async", "reindex": false, "reindexCount": 7, "indexRules": { "jcr:primaryType": "nt:unstructured", "nt:base": { "jcr:primaryType": "nt:unstructured", "includePropertyTypes": "all", "properties": { "jcr:primaryType": "nt:unstructured", "fileReference": { "jcr:primaryType": "nt:unstructured", "propertyIndex": true, "name": "fileReference" } } } } }

Is there something that I'm missing?  Why can I not get this index to apply against the slow query?