As cordially as I can put my view about Rossi, I've written just a few issues I have with the device.
First, we have a black box with "secret sauce" so to speak. This is not a mechanism for installing trust in the device or the experimentation. This places the largest question mark on the whole situation and now we're receiving reports that the catalyst isn't needed. This should raise some doubts, but should not lead to dismissing Rossi yet.
Second, the numbers have been run several times about shielding claims for gamma radiation and general certification in such devices. Assuming Rossi has certified his device, which is a real requirement if it produces gammas, the shielding he claims is not sufficient to block even low level gammas. This is a very real concern if it his claims are to be believed. That brings into question however; the claim reversals of "yes it produces gammas", "no it produces none", "yes it produces", "maybe it produces." I think it's reasonable based on the measurements previously taken that its unlikely to produce any.
Thirdly, the numbers don't always add up. People make mistakes in math and I assume Rossi does too from time to time. His claimed amount of water pumping through his system is easily enough to fill his work area in the Krivit video. If his claims of complete conversion to steam are true, not only would the area of those 2 very small rooms be saturated in steam, but it'd be exceedingly difficult to breath in. The escape here is that Rossi was hoping Krivit wouldn't apply due diligence and accept the claims while running the device at the minimal of power. IE: He purposely trashed the demo.
Finally, there are the claims of big name organizations discussing doing business with Rossi. First it was NASA until NASA's report came out stating Rossi didn't have what he claimed. Then it was the Navy, followed by them denying any involvement with Rossi. Recently it was MIT and a possible testing only to be turned away by Rossi. I can understand avoiding organizations like these completely, but to meet with them wreaks more of a desire to have a name association in news.
My conclusion is that there is not enough information to make a 100% correct decision on whether he has something or not, but that from experience and these large gaps/faults, it is highly unlikely. I would however; but overjoyed to be proven wrong....that just hasn't happened yet.