I'm trying to install Java in order to use the Safari plugin. The "missing plugin" functionality redirects me to the Java download page, where I downloaded a file named
jre-7u55-macosx-x64.dmg, which contains
Java 7 Update 55.pkg.
Now, when I try to run the installer, I get the following error message:
Java 7 Update 55.pkg can't be installed because its digital signature is invalid.
The package may have been corrupted or tampered with. Get a new copy of the package and try again.
I'm not sure what to do here. I do need to install the plugin unfortunately. :-)
I'm running OS X 10.9.2 (up to date, as far as I can tell from the App Store) on a mid 2009 mbp, in case that makes any difference.