I've played around with the settings, and changed the capture options to "Composite". and am now getting video, BUT.. it's black & white (my tapes are colour). I get milliseconds when it has colour but not often.
I've tried using all the PAL/NSTC/Seecam options but none are any better or worse than the others.
I've tried all my video players, cleaned the heads etc. but still just old fashioned B&W.