This is a system issue. The folder is located on the system disc that needs admin rights to write data.?
PSUD was updated in 2019 to move storage of the rectifiers to the AppData area instead of the Program Files area. This was mandated by security changes on Windows 10 which prevented writing data to program areas so the previous version from 2017 would not run correctly.
Hence my question to the OP on what version they were running.
If you are running lower than version 2.10.0 / build 63, I would strongly recommend upgrading as your software is 6+ years out of date. The most recent Windows versions of PSUD2 are stored here ->?
/g/duncanampspsud/files/psud2_windowsRegards,
Duncan
Regards,
Duncan