Running 9.5 SP1, after the deploy image step succeeds, the "inject script" step fails with the error "The Web service responded with an invalid call".
What it really means is, it can't copy the XML to the target file name of C:\windows\system32\sysprep\unattend.xml . Previously post image deploy, the volumes would be mounted. In 9.5 SP1 it is not.
Do I need to manually mount the volume, or am I missing something?