Error: Receiving Non V5 / Non V7 packets from the following devices:

Hi
I've installed for testing NFA 8.6.
There is currently one Cisco 6500 Catalyst which exports netflow in the version 7.
NFA shows the interfaces and also the traffic (but not the correct ammount), but I get the error message Receiving Non V5 / Non V7 packets from the following devices:.
For testing I hardconfigured the 6500 to netflow V5 and pushed the clear button in NFA. That removed the error message. Later I switched it back to V7 and I got the error again.

The online help says that NFA only supports V5, where as I read in this forum it also supports V7 and V9...

So which one is correct?
Can I simply ignore this error message?

Thanks
pato