In version 5.3.0 and earlier, the webinator
user should instead be explicitly granted all rights to each of
the second-level objects (All Users, All Groups, All Profiles,
All Settings, and Maintenance).
If
Verify that file exists were checked, Vortex URLs
would result in 404 errors, because IIS would not find
the Vortex files in the web site's document root as it expects.
They are in Vortex's ScriptRoot dir instead.