postscript tab missing on Windows 7 pro x64

Hi!

Have two printers with PS drivers: hp 5550 and kyocera 5551ci.

Postscript tab in printing dialog box missing for both printers on cpmputers with Windows 7 pro x64.

PS tab only appears on computers with Windows 10 pro x64.

Printers are installed through the print server, so drivers fully identical.

What is wrong with Corel x6 on Windows 7 pro x64?