I know that this post is a year old now, but I ran into the same issue. I was in contact with the support department and they didn't suggest this after a week of interaction. I'm hoping this helps others who may have the same issue. Here's what I got to work for me on a Windows 7 host computer with Vagrant VMware Utility Version 1.0.7.
The download link for the Vagrant VMware utility gives you a MSI installer. The trick is to get the MSI installer to run as admin, which you can't do in Windows 7 from the Windows Explorer (at least I don't know how to). If you open an admin command prompt, you can navigate to the MSI installer and execute it. Once I did that, I got past the same error message as the previous poster and now I'm able to use Vagrant with VMware Workstation Pro 15.