I managed to get the Frontier Tranzport working under OSX Mojave, and fully working in e.g. Logic Pro and Sibelius.
It should equally work in older versions of OSX.
Disclaimer> Please note that the above is at your own risk, so make sure that you have made full backups of your startup drive and you are prepared to reinstall OSX if things go wrong. No guarantees from my side!
This is how I did it:
1. download the drivers from the Frontier Design Group website:
http://www.frontierdesign.com/downlo...OS_X_1_4_3.zip
2. if not already automatically expanded to "TranzPort_OS_X_1_4_3.dmg": extract the ZIP file in the Download folder
3. open/mount the DMG file by double clicking on it
4. DO NOT USE the installer "Transport installer.mpkg", which is shown! It will simply not work, whatever you try
5. scroll down until you find the "Pieces" folder and open it
6. in the Pieces folder, you find 7 items, of which 6 are PKG files: these are the individual installers
7. DO NOT DOUBLE CLICK on each of the PKG files, because this will make OSX protest with a protection pop-up:
>>"xxxxxxx" can't be opened because it is from an unidentified developer
8. Instead, make sure that right-click on your mouse is activated.
9. Right-click on each of the installers (one by one) and use/select "Open" from the menu to launch the installer
Alternatively, you can also press the CTRL key and click on the PKG installer and use/select "Open". This is exactly the same thing.
10. Each time, you will get an OSX warning:
>>"xxxxxxx" is from an unidentified developer. Are you sure you want to open it?
11. Since you have safely downloaded from the Frontier Design Group, there should be no worry for any tampered files.
Select "Open" (as "Cancel" will simply stop the procedure...)
12. Run through the installer steps as usual, but at the end, do not press "Reboot".
13. To ensure proper running of the subsequent PKG installers, press CMD-OPTION and Esc(ape) to kill the "Installer" application
14. repeat steps 11 to 13 for each of the subsequent PKG installers
15. Once you have done all 6 PKG installers, close all your programs and select "Restart.." from the Apple menu
16. after reboot, all drivers should have been installed. You will only see their effect in the DAW software of your choice.
17. consult the Frontier Design Group for specific functioning in your DAW (even if the text appears only valid for older versions of your DAW software).
Enjoy this rather old hardware on your new Mojave installs!