Shockwave 27.0.0.130 is not working ANYMORE with the newly installed firefox 56.0 / UBUNTU16.04

It is sudden, Shockwave 27.0.0.130 is not working any more with newly installed Firefox 56.0 on my Ubuntu 16.04 AMD64 platform

It is not a matter of having it always active or not, It is active

No media files can be played from any site , and for any content

I verified, I have the latest version of Shockwave

The new Firefox 56.0 was installed yesterday from the Ubuntu deposit

It is popping up very fast on the internet about this problem

Hope somebody finds a solution rapidly

Thanks, in advance