Chrome 42

Chrome (and Firefox) are phasing out support for “NPAPI” plug-ins.  This includes things like Apple QuickTime, but most importantly for Mosaic users, Microsoft Silverlight.

With version 42 Chrome will act like Silverlight is not installed:

To correct this enter

chrome://flags/#enable-npapi

in your browser address bar and locate the setting shown below.  Press “Enable”:

Now the link will read “Disable” and a “Relaunch Now” button will appear at the bottom of your screen.  Press it:

Cage-side Assistant Silverlight functionality will be restored.

You can read more details here: http://www.chromium.org/developers/npapi-deprecation

In particular, read the April 2015 section:  Google is making it “more difficult to navigate, as a means of discouraging NPAPI use by developers.”

The Mosaic team is making progress with the pure-web version of the Cage-side Assistant and expects to meet the September 2015 deadline for loss of browser support for Silverlight.

Additional reference: https://support.microsoft.com/en-us/kb/3058254/