I’m just posting this in the event it helps someone out in the future. 

• I have VisualSVN Server installed in Windows 2003 server with the Subversion repositories located on a network share. 
• The account running the VisualSVN Server service is a domain account that has full control over the repository location.
• I have no issues with TortoiseSVN from remote machines.

I opened up the VisualSVN Server Manager Manager and received this error

“MMC could not create the snap-in”

The Fix

On the server running VisualSVN Server, you need to store the User name and password for the network server that has the repositories. 

Go to Control Panel –> Stored User Names and Passwords:

Click Add and input the logon properties for the network share:

Close and re-open VisualSVN Server Manager and everything should be working now.

Giddy Up!