The location where the DX Designtime Loader is looking for the skin packages has changed again !
For Delphi DX10.3 Rio now all skin packages (=dxSkin*.bpl) must be located in
Code:
<installdir>LibraryRS26Win32pl
otherwise they are not displayed in the "Project Skin Options Editor" inside Rad Studio IDE.
Simply copy them
from: <installdir>LibraryRS26
to: <installdir>LibraryRS26Win32pl