Hello, Bradall
Thanks a lot for your posting here and sorry for the upgrading issue you run into. No vmnet1 and vmnet8 installed maybe caused by it cannot stop previous network related services during upgrading.process because of complicated host environment.
Bradall, I think this issue could be resolved by rebooting the host after uninstalling the workstation by manual. Could you please take some time to try below steps:
1. Uninstall workstation by manual
2. Reboot host
3. Reinstall workstation
If there still is the issue of vmnet1 and vmnet8 installation, Please kindly upload the log file "C:\Windows\INF\setupapi.dev.log" for further investigation. Hope this help. Thanks again.