can't download .dmg files

Safari > Preferences > Extensions

Disable all Extensions and test.

Enable Extensions one by one and test.

To uninstall any extension, select it and click the “Uninstall” button.

Is the problem that you can't download the files, or that you can't open them? What exactly happens when you try?

What happens when you try?

It could be that you need to go to system preferences/security/ general and change (Allow apps downloaded from: (Mac app store) to ( from mac app store and identified developers)

I have a slightly different issue--for some reason I can't open any .dmg files no matter what i try. It does the little animation to show it created a window for the new app but the window never appears. I changed my security preferences as well.