Also, check the "resource.resolver.searchpath" property in http://localhost:4502/system/console/configMgr/org.apache.sling.jcr.resource.internal.JcrResourceResolverFactoryImpl has value "/libs/foundation/components/primary"

You are not required to add Page.html.jsp. In my 6.1 instance the HTML extensrion is rendered by /libs/foundation/components/primary/cq/Page/Page.jsp. TIMER_END{0,ResourceResolution} URI=/content/sites/www/en/home.html resolves to Resource=JcrNodeResource, type=cq:Page, superType=null, path=/content...

You can enable directory listing by turning on the Auto Index option of Apache Sling Default Get Servlet- Check the "Auto Index" checkbox in http://localhost:4502/system/console/configMgr/org.apache.sling.servlets.get.DefaultGetServletClick on "Save"You will see the directory listing enabled when yo...

If you reinstall cq-socialcommunities-pkg-1.7.197.zip then all dependent packages of social feature will be installed again. 

It could have happened that during the upgrade some of the 6.1 social packages may not have got installed. Go to crx/packmgr and see if the following packages are in installed state or not - cq-social-commons-pkg-1.5.151.zipcq-socialcommunities-pkg-1.7.197.zipI guess social-commons package wasn't in...

Instead of using query.execute().getNodes() method use the following snippet to get the iterator- final QueryResult result = query.execute();final RowIterator iterator = result.getRows(); while (iterator.hasNext()) { final Row row = iterator.nextRow(); Node node = session.getNode(row.getPath("parent...

If you are using JCR API to execute this SQL2 query then you will have to use a different method to get the node returned by the query. //Normal SQL2 query execution final RowIterator iterator = result.getRows(); while (iterator.hasNext()) { final Row row = iterator.nextRow(); Node node = row.getNod...

This is a bug in the code and you can reach out to Adobe daycare and raise a ticket. This has been fixed in the latest version of AEM - 6.1. However, you should be able to drag and drop the tags in the tag admin tree to move them. 

You can also try using the Bulk Editor https://docs.adobe.com/docs/en/aem/6-1/administer/operations/bulk-editor.html for this use case. 

Have you tried using the dialog conversion utility provided by Adobe - http://localhost:4502/libs/cq/dialogconversion/content/console.html