I've been using Adobe Master Collection for years and Flash Catalyst was the greatest addition to my workflow. I have no knowledge of Flash Professional whatsoever, I am a designer and I have no knowledge of coding, yet I was able make a pretty complex website using Flash Catalyst CS5.5 only. I was eagerly waiting for its new version, expecting many bugs it had would be fixed, so that I would upgrade my website. I believe this software was an amazing idea and it worked great despite its flaws. It is unfortunate that such an innovative product was discontinued.
For those who want to check my website, made using only Photoshop CS5 and Flash Catalyst CS5.5, here's the link: