Message of OS and browser incompatibility

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    For some reason, I got this message today for no apparent reason. - My web browser and or combination of my OS are not compatible with the SlingPlayer plug-in."  My Mac OS is OS X Yosemite 10.10.5 and Firefox version 48.0.1. I have been watching the Slingbox web browser for over a year with no problems and suddenly this. What can be done to rectify this issue.


    Terry Fox