Just updated to El Capitan 10.11.3 this morning and running Lightroom CC 2015.4. When exporting, I'm getting a pop-up: Export Operations Not Performed / File could not be written.
You are trying to export to a folder that does not have WRITE permission.
Either change the permission on this folder, or change to a folder where you do have WRITE permission.
Could you please change the location of the folder where you are trying to export the images.
Also please make sure that you have Read and Write access on the folder where you are originally trying to export the images.
Thank you so much, really appreciate your help DJ & Tanuj. Downloaded the Seagate NTFS driver and worked great, no reformatting needed.