Yes, dwg 2018 is too new for current VW2017. The Teigha libraries have been updated for dwg2018 but those are not implemented in VW2017. I think they will be in VW 2018. ODA has a DWG converter that you can use "Teigha File Converter" which can be found at the following URL and is available for Win, Mac etc. (they also have a viewer for multiple platforms) https://www.opendesign.com/guestfiles/teigha_file_converter