I'm helping a friend out and editing a few things for her. She uses Adobe Creative Cloud and I use Lightroom 5. I tried to have her export as a catalogue and create smart previews.... but what she sent me was an "." file which LR5 wont let me import as a catalogue even after I have un-zipped it.
When I have done this before (when I was the one sending files) through my LR5 to LR5 user I have two files that produce... a ".lrcat" file and the smart previews file that I would send.
How can I get the .lrdata file (which I believe now contains both the lrdata and lrcat????) from the Creative Cloud user to import and be usable within LR5 so I can edit the images?
Lightroom catalogs are not backwards compatible, so you can't open a catalog created by LR CC in LR5.
The .lrdata folder contains the regular previews, and I don't think it is needed or useful in this situation.
What you would need (if you were running LR CC) is the catalog file (.lrcat) and the Smart previews folder.
But without LR CC you won't be able to open your friend's catalog.
You don't. LR6 / CC2015 uses a newer format of the catalog which can not be imported into LR5.
Use DNG or XMP sidecar files to transfer the work.