Drobo

Problem installing Dashboard 3.14.2 on Mojave 10.14.5

I can’t install 3.14.2 Dashboard on my iMac with Mojave 10.14.5 I get a message telling me; “Installer cannot open tiles in the " Installer package archive format” . I’ve looked through the archives, but can’t find any help. Please let me know if anyone has a solution??? See the attached below. Screen Shot 2019-07-16 at 10.43.44 AM