Can't delete file, in use - did I ruin something?

[Jackku]

Hey!

This problem - installing Malwarebytes app, download the file, install it, then send the downloaded file to garbage bin. Try to delete it - says it's in use.

Was it just system using it or did I ruin something in installing process? Did Malwarebytes now install defected? I left it in trash and it let me install it later. Or are these apps so tough that they either install (and work) or they won't install at all?

 

[KALLT]

Have you ejected the disk image?

 

[Fishrrman]

Shut down the computer -- all the way off.

Reboot -- then try again.

 

[supermariofan25]

Have you ejected the disk image?

To further explain. Many Mac applications come packaged in disk images ending in the .DMG file format. These disk images are containers acting as a virtual USB drive if you will, like a USB drive they need to be ejected before the downloaded file can be deleted.