Can't install agents

MM 8.13, source Exchange is 2007 SP3, target is 2010 SP3

Register the host server for the legacy agents to be installed on. When I try to install the mail source agent it fails installing the shared components.

"Cannot install Shared components on server QUEST1 due to errors. Install Shared components manually on server QUEST1 in the QMMEX$QUEST1$ shared folder."

We tried installing the shared components manually as instructed, then try again from the console, but it still fails.

Found this article, but UAC is already off

https://support.quest.com/migration-manager-for-exchange/kb/64498

I have them check security policy now, but I'm just trying to get ahead of this.

Thanks,

Rich