Solution
If you install
DIAdem 2019 or later on a computer and then install another NI software product of the same or older version (for example,
LabVIEW 2019 or lower) on the same computer, registration of a
DataPlugin that uses USI 19.0 or later fails because the later-installed NI software product modifies
registry entries.
To resolve this issue, open the
NI Package Manager, deselect "Products Only", and click "Repair" for the "NI USI Core" package.