Just trying with Visual Studio 2026 and I get a warning:
Unsupported
This version of Visual Studio is unable to open the following projects. The project types may not be installed or this version of Visual Studio may not support them.
For more information on enabling these project types or otherwise migrating your assets, please see the details in the "Migration Report" displayed after clicking OK.
- Meeting Schedule Assistant Setup, "D:\My Programs\2022\MeetSchedAssist\Inno\Meeting Schedule Assistant Setup.innoproj"