Hi, Dave.
Thanks for your suggestion. I will check this and even try to create a new blank project, step by step, replicating the one that fails, to see what's causing the issue.
I think that maybe it is related to file access permissions. The first form used in my apps is just a custom 'splash form'. Nothing else.
I remember a few years ago it was needed to create an .XML file with some info regarding file paths.
Or perhaps I have been including unnecessary files in the deployment that are not needed anymore, as these apps were initially created with Delphi XE, then Seattle, then Rio and now Alexandria.
I will post the solution if I found it.
Thanks!