Corner Pin cannot allocate a buffer larger than 30000 pixels in either dimension error

Hi all

I'm getting this message when using Mocha in AE 'Corner Pin cannot allocate a buffer larger than 30000 pixels in either dimension error'. I understand (or at least thought I did) what the error was, that the surface plane in Mocha was too big. I checked the position values for the corner pins and indeed they were much larger than 30,000. I reduced the plane's size and hey presto the error disappeared when previewing the timeline in AE. However, I don't get the error when previewing the timeline now, but I do when trying to render out. I've checked the position values of the corner pins and they are far smaller than 30,000.

I'm pretty new to Mocha so it's possible I'm making a silly mistake.

Any ideas gratefully received.