An option that has proven to work for many users is simply reinstalling GoZ in Cinema 4D and Zbrush.
Please see the screenshots below of where to find the GoZ install option in Cinema 4D and the Force reinstall option in Zbrush.
- CINEMA 4D
Once the reinstall is complete, restest and see if GoZ is working as expected.
If GoZ is not working as intended after reinstalling, please open a support ticket here: