Deleted all the preview folders and still same error message comes up when I start Lightroom 5.6 . Any other suggestions?
Also where is the purchase history for apps I am subscribed or have purchased via adobe?
There is an .LRDATA folder for each catalog you have created, make sure you’re deleting the one that corresponds to the catalog with the problems, not the new catalog you created as a test.
The subscriptions and purchased/registered products list can be found if you log into www.adobe.com <http://www.adobe.com> then click your name and Manage Account. For me my one CC subscription shows initially, but I can see everything once I click on things like View All one or two times.