Successfully installed UFile2018 from disk. On initial use, program forced update to v22.20. Now, program initialised with 4 threads (in Resource Monitor) then self terminated after ~15 s on Win 7 Pro SP 1. Tried compatibility mode Win XP SP2 with administrator privileges with same result. Tried following steps without success:
Open Windows Explorer (WindowsKey + E)
In the address bar, type: %localappdata%\Thomson_Reuters_DT_Tax_an
Delete all impotexpert.exe_* and ufile.exe_* folders found in %localappdata%\Thomson_Reuters_DT_Tax_an
Reinstalling from disk brings back to original state where the initial screen is presented, then asks for update.