OpenCOLLADA for Maya 2018 on Windows 64 has been released. Version 1.6.59 was released on August 30th for Max 2018. Binaries are now provided for Max and Maya in versions: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018. If you find any issues, please contribute on the OpenCOLLADA Github repository.