Fireworks - serial number is unexpectly required

The solution is a bit rough, but it works.
1) install Muse CC from the Creative Cloud
2) sign in to the Muse app via your Adobe ID
3) if okay, than launch Fireworks and ingnore end-of-trial window - you can close it and still work in Fw
4) if you close Fireworks app you probably have to repeat this again ... at least until Adobe guys will fix this sh*t ;-(