"Couldn't load kPFColorParamSuite." Media Encoder FAILING

Hi there,

I'm getting the error message "Couldn't load kPFColorParamSuite." followed by an export failure when trying to export my project. It says the error over and over and over again, followed by
"Export Error
Error compiling movie.


Unknown error."

My thinking is that I have used Colorista II to colour grade this project, but it seems to work fine in my system. How can I get around this?

Thanks,
Thomas