FFT 7.1 streaming mode

Did you happen to "Upgrade" from the 6.1 streaming or earlier core?

I know the streaming interface is different, and although the conversion document states how the signal names are re-mapped, they don't mention that the new core is much more picky on both start and stop of the controls.

I'm using the 7.2 core in streaming mode now, without any problems. But I've know Altera has had issues with specific version and specific settings in the past.