hello people, i need help urgently

yesterday another guy gave me a 2018 skp model, but i'm working with vray 3.4 (skp 2017) and i asked him to save as 2017 model, the problem begans when i tried to start rendering. Skp/vray not rendering at all, if i start a new project this works without problem, but if i got skp 2018 models converted to 2017 i got this error:

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ps. the materials errors i know how to fix (i changed directory)

thank you and sorry for my english