Thanks for the quick response.
I am using Mint Mate 18.1
I installed GIMP from Update Manger with a PPA
otto-kesselgulasch/gimp-edge which I understand gives the latest Unstable
Development Version of GIMP 2.9.5
I have read about installing file-darktable and OpenEXR. I thought they may
be plug-ins but have not been able to find anything.
How do I go about finding a version of Gimp that supports EXR ?