After I download software from dotphotobooks.com, I get an error message that says:
dotphotobook can’t be opened because it is from an unidentified developer.
Your security preferences allow installation of only apps from the Mac App Store and identified developers.
This is a security preference on your Macintosh that prevents apps that are not obtained through the iTunes App store.
- Go to your Security & Privacy settings.
- Unlock them.
- Choose "Allow apps downloaded from Anywhere"
Please refer to this screenshot:
You may also receive an error message relating to certificates, which you can ignore to run the software.