Many thanks to Bob for his kind offer, I thought I should put it on the record that BlackMagic also sent me the file in pretty quick time (they beat Bob by a few hours).
For the public record, the issue is that FCP5 has changed the polling interval it uses to talk to VTRs. This causes issues with Panasonic decks. Adding a small text file to your FCP plugins folder tells FCP to revert to 4.5 behaviour.
The gory details:
Copy the following text (between the dashed lines, not including them):
———————snip————
// Enabler to disable alternate ETT polling mechanism
startuponly
FileVersion(60243, 41391, 68)
code
dictput(0,”kgDeviceControl”,”useAltETTPolling”, “value”);
——————/snip————————
Paste this into TextEdit and then save it into:
/Library/Application Support/Final Cut Pro System Support/Plugins
with the name:
DisableAltETTPolling.txt
(You’ll need to be an admin user, natch.). Seems to have fixed the problem here. If the above doesn’t work, maybe there’s also some recource fork voodoo going on. Contact your capture card vendor for the file!
PG