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I've installed Delphi 10.4 from ISO.Based on the comments at https://code-partners.com/errors-in-getit-when-installing-rad-studio-10-4-patches/ I have "switched" to an on-line installation.During installation I did not install InterBase Express, which I now need. How can I install the files that, in previous versions, were in c:\Program Files (x86)\Embarcadero\Studio\20.0\source\IBX\
I'm answering my own question. Seehttp://docwiki.embarcadero.com/RADStudio/Sydney/en/Adding_or_Removing_Features_Using_the_Feature_ManagerUnder Tools -> Manage Platforms -> Additional Options, I checked the "InterBase Express (IBX) Components" option.All done.