Vray 3.6 maya 2018
just install trial version after that copy zray.mll to C:\Program Files\Autodesk\Maya20XX\vray\plug-ins\zray.mll"
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its working, create vray_zzz.dll file in vrayplugins folder by renaming zray.mll and run Maya as admin it will works fine
if vray_zzz.dll doesn't created automatically in Maya20xx/vray/vrayplugins, you need to copy zray.mll to there and rename it as vray_zzz.dll.
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