xNormal error - Sorry cant find a plugin for "instalationfolder"/detail.exr

Hi I run into a problem that says - Sorry cant find a plugin for "instalationfolder"/detail.exr, when I tried baking normal map from Highpoly to lowpoly mesh (OBJ) exported from Zbrush 4R2 with new xNormal 3.17.5 . previous xNormal 3.17.2 worked just fine (but I used meshes created in sculptris instead of Zbrush, then in Blender set UVs for LP mesh). I followed some tutorials on youtube even tutorial here on Eat3D called "complete pipeline Zbrush to xNormal" or something like that to make sure Im doing everything as I should. Please can someone tell me what Im doing wrong and what should I do with it? I already know the power of xNormal and I cant imagine to work without this great program. I have win7 64bit.

Every advice will be much appreciated.