2. In [Flash Player Settings Manager], click [ Advanced ] → [Trusted Location Settings..] → [Add..] 3. In [Add Site], click [Add Folder...] → select the location where the e-Manual is stored → click [OK] →[Confirm] →[Close]. Attempt to open the e-Manual again.
This error may also appear as the similarly worded "App Name" can't be opened because it was not downloaded from the Mac App Store." depending on the security settings on your computer. A sample of the error is shown below: