Netflow Analyzer y Riberved Steelhead

Hi.

I've got some riverbed steelheads and I'm testing NetFlow Analyzer with them. I've configured the Flow exports pointing to the NFA server and it works, well, sort of.

I've got five appliances (different models but same firmware, 6.0.2) and three appear on the dashboard but the other two doesn't, it's like they aren't sending any information to the NFA.

I've checked and re-done the configuration, it's the same as the working ones, I've addredd additional ports to the NFA and reconfigure the flows with no avail.

I'm using a demo license provided by a reseller, not the one included with the download, I can monitor 60 ports for 30 days, and there are more tan enough licenses left.

Any ideas?.