1)Right now I find I can't open it from my desktop bar. Nothing happens
2) Prior to this, I lost over 1900 files when I installed it (they went missing in both LR 5.7 and CC). Found them on the desktop and moved them into CC but with no edits! Just the raw dng imports.
Does anyone know how to solve these problems??
If the metadata hasn't been saved to the files, the edits are in the catalog only. Importing the files will bring them in their original form. Are you sure you updated the most recent catalog that had the edits in them?
As to the desktop bar, it could be a link to an older icon, make sure it's a shortcut to the newest version.