I have been using Filemaker 12 for some time. I loaded Filemaker 14 and now nothing works. I am running MacOS 10.14. When I reloaded Filemaker 12 I get an error message " This application has been installed incorrectly or modified by another program. Please run the installer to get a fresh copy of the application after determining the cause. I uninstalled Filemaker 12, reinstalled and the message persists.
I have no idea how to proceed, do you have any suggestions?