i’ve also had this problem. I switched off auto selection between dv and hdv export on the deck. Setting it to HDV only. then the image came up in the digitising window. regardless of the timecode etc. until you get an image instead of color bars you are not able to capture. also, it’s a bit finickity in terms of whether the deck is on before the computer boots or before fcp starts. i find switching the mac on, then the deck, then starting fcp works best.