I have downloaded a program, in DMG format.
It mounts an image ok, however when I attempt to open the installer package it doesn't work

I think the fact that it is locked doesn't help. (The installer icon has a little pad lock in the corner)

I open the general info on the icon, and there seems to be no way to unlock it.

Am I stuck??

Any help appreciated.

Thank you

Hi BennyGSR, if you're the admin of your computer then are you sure you can't unlock it. Select info on it (apple & i keys.) What does it say. All you should need are Read permissions for an installer. Do you have permissions to open & install it?

I do have permission to open and install it. I am the sole user of this computer.

When I apple i, and I look at the "preview" of the icon, there is a silver pad lock in the bottom corner.

Under "ownerships and permissions" I am the owner, and the padlock there is unlocked. The settings are read and write on all of them.

I don't think it should be unusual for an installer to be locked. I'd try a SAFE Boot & Repair Permissions & try again. There may be a problem with the installer itself. Is it the original or a custom made one. Meaning is the installer the size it should be or has it been reduced in size.