Bug 445754

SUMMARY

STEPS TO REPRODUCE
1. Add-on catalogues
2. Hit 'install' button for each
3. Wait for 'Install' button to change to 'Uninstall'
3. Come out of 'add-on' dialogue box
4. Return to 'Add-on' dialogue box, some return to Install' button state, some do report as if installed, 'Uninstall' button, but none of the catalogue, images etc. actually function, its as if none have been installed.
5. Some of the catalogues state 'Reinstall' even after several attempts.
6. Rebooting; No change to the above
7. Uninstalling KStars, no change to above.
8. Tried older version 3.3.4, still the same.
9 Windows:-
 Edition	Windows 10 Pro
 Version	21H2
 Installed on	‎20/‎10/‎2021
 OS build	19044.1348
 Experience	Windows Feature Experience Pack 120.2212.3920.0


OBSERVED RESULT
Some catalogues appear to be installed, some do not appear installed, some request reinstall.  However, none images sets actually appear, DSC are enabled. 
No starts beyond the 6 magnitude, even though the Tycho2 catalogue reported installed, i.e. Tycho button shows 'Uninstall'
EXPECTED RESULT
So function as per Linux versions on Ubuntu & RPi OS. These seem to function correctly.

SOFTWARE/OS VERSIONS
Windows:  10 21H2
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION