I found some hints on your “greyed out target field issue” in the internet, like here:
- Windows 7: editing Target in shortcut properties box
- Target field on Windows shortcut is disabled
- Run as Administrator greyed out on shortcut
Hopefully one of those tips helps you solving your problem. Please report back, what helped.
If setting admin rights dows not help, my personal guess is that creating a new shortcut from the program location might be promising.
But that’s nothing you want to suggest your readers, I guess 😉