Conversion of Sketch-up 2017 file to 2016 File

Hi there, I can’t get sketchup warehouse extension library to work anymore on the 2016 pro version to download a converter and I have two 2017 files I need to save down. The web platform only allows down to 2017 so I feel stuck. Can anyone help me?

Thanks in advance!

hello, have a look at this plugin
install it, then a new “open newer version” will appear in the file menu

you will then be able to open any model downloaded from 3d warehouse, even as newer versions