I've always found it best to do a hold frame by exporting out a still of the frame I want to hold on. Much easier to work with in the sequence.
I agree with Jim's suggestion, and almost always use that method for a Freeze Frame, myself.
Good luck to the OP,
Are you using Blackmagic hardware? I used to have this problem but cs6 and the new BM drivers fixed it.
I am using a BM 3D Extreme card Richard, which I updated about three months ago. I will check if there is another update available.
I downloaded the latest drivers (9.6.8) and it has not made a difference, but good call. Thanks.
Thanks for all the other suggestions. I might have to resort to using the rendered frame as Jim suggested.