TomF

Usually I make a backup of FDConnectionDefs.ini and restore it after updating. After my updates in the last years there was always a default FDConnectionDefs.ini without the Connections I added before. Since this file is shared, even an existing D11 on the same machine does suffer from updating D12 in this case. In general I do not understand why the file is touched anyways - would be a great option in the update-options dialog to ask/inform customer about this overwriting of the file...

I'm not quite sure - but I think I had a similar issue and solved it by installing Tee-Chart in Delphi. This installation of Tee-Chart can be activated during Delphi installation or later somewhere in the Delphi Tools/Features-menu.

Had exactly the same issue on one computer a few days ago. I exported the Delphi 11.3 setup with the migration-tool - removed and re-installed Delphi and then imported the setup with the migration-tool. Everything worked fine then on both computers. I never saw this "hickup" before on my environment...