That's hard to answer without enough details.
What is your VMware Fusion version? (I'm assuming the tech preview, but as you don't tell we don't know for sure)
What is your host OS version?
Wil| Author of Vimalin. The virtual machine Backup app for VMware Desktop Products
| Vimalin : Automated backups for VMware Fusion and VMware Workstation Professional
| More info at https://www.vimalin.com
| Twitter @wilva
| VMware Wiki at http://www.vi-toolkit.com
We were seeing this with 10.13 Dev Beta 5, and we filed a RADAR with Apple. It no longer occurs in Beta 6 in our testing.
Will update and try again. Thanks.
The upgrade to beta 6 resolved the issue for me as well.