Unable to install PTGui Pro 13.7 on MacOS Sequoia Version 15.7.4

[Gundolf Pfotenhauer]

I recently purchased ptgui pro 13.7 update.
i had before ptgui pro 12.24.
i am not able to install the new ptgui version. my system is mac studio, sequoia 15.7.4.
i get the following error message: filesystem error: in create_directory: Permission denied [*/Applications/ PTGui.app"] ["/Volumes/PTGui install disk/PTGui.app"]

[PTGui Support]

Hi Gundolf,

Apparently your macOS is denying PTGui to install itself in the
Applications folder. I'm not sure why.

Please try this:
Open the PTGui install disk (the dmg file you downloaded). Inside is the
PTGui application. Instead of double clicking it, open a second Finder
window and drag PTGui into the Applications folder in the Finder window.

Or if this fails, you can drag the PTGui application into any folder you
desire and start it from there. It just needs to be moved out of the
disk image.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com