Hi Journeyman
Thanks for taking an interest in my problem, I am like you 'just an old muso' as you may be able to see from my reply to Andrew you both appear to be on the right track.
I have had the r24 for about 10 years and it was bought as a stand alone 24 track recorder, however the convolutions of doing any editing are quite obscure so for a few years its been my AI and I have transferred tracks from BIAB to CB via the dropbox and its been fine as I don't have to have both programmes open there being an intermediate destination. It has options to operate at higher bit rates but I generally didn't use them and as you can see(I hope) from my reply to Andrew there was a mismatch which might have cured it (partially)
Sorry at the moment I haven't got round to screen shots, but I have made most of the alterations you both suggested and its cured some of the problems, however as you will have seen although the stand alone version will now operate without glitching up the r24, when the Plug in version is operated at the point of transfer the on the window that asks if I want separate tracks or one track the whole thing freezes.
I'll check the remaining things in the next couple of days and post another update, thanks again, it seems there might have been two problems and one is resolved.
Keep safe and remember old muso's saw them all first time round

Adrian Hodgett