One - Stove heat. Is the cat lighting off properly? It should glow a bright orange with few or no visible flames in the firebox, giving stovetop temps of 550+. If you never get this, then maybe something is wrong with the bypass linkage or bypass flapper.
I believe that glowing orange-red is not necessarily an indication of the catalytic combustor working. This is from both WS and Tim Cork of Fire Cat Combustors (the manufacturer of the cat in the Fireview). In fact, according to Tim Cork's blog, the bulk of the cat's work is done while it is not glowing at all.
(broken link removed to http://firecatcombustors.blogspot.com/2009/10/understanding-catalytic-combustor-in_28.html)
Does the combustor have to "glow" before it is working?
This is a misconception. A catalyst can glow during certain stages of combustion. The determination that a catalyst is not working simply because it dosen't glow is inaccurate. During the low burn cycle, when the catalyst is doing the bulk of its work, it usually does not glow. Also, extremely dry wood (oak, ash, etc...) can burn clean enough not to produce a glow in the converter.
Good point about the bypass handle. When I first starting using my FV, I did not fully engage the combustor bypass handle. I then realized that it has to be pulled up enough firmly and then heard the "click".