I have the 5.2.2 tarball. after extracting it and pointing the acs-admin package loader to it:
http://localhost/acs-admin/apm/package-load-2?url=&file_path=%2Flocal%2Finstalls%2Funx%2Fdotlrn%2Fopenacs-5-2-2%2Fpackages&user_id=1359&return_url=%2Facs-admin%2Fapm%2Fpackage-load
I get the following error:
The directory specified, /local/installs/unx/dotlrn/openacs-5-2-2/packages, does not contain any APM files. Please try again.
So, I take it that is NOT the way to upgrade?
-al
