Thanks to some helpful tips I could improve the Easy Pose System for Meshlights. :)

ISSUES SOLVED:

 - DazStudio: Image ratio changes to 1:1 on loading

 - DazStudio: Image size changes to 91 X 91 on loading

 - Reality plugin: Output path is set to a non-existing path

You can download the updated files here:

http://www.ShareCG.com/v/67419/view/21/DAZ-Studio/Easy-Pose-System-for-Reality-Meshlights

IMPORTANT for those who have already downloaded and installed the set!

 You will have to re-configure the MeshSpots (re-assign the IES file) if you fail to do so, then you will get an error in Luxrender when rendering with one of the MeshSpots.