Could not load file or assembly ‘DragnetControlsLib’ or one of its dependencies. Access is denied.

If you are trying to install SourceGear Fortress on a 64bit Windows OS (Vista or Windows 2008) you may have seen this error when trying to access the VaultService page. In that case, edit the application pool’s (VaultAppPool) Advanced Settings and set the “Enable 32-bit Applications” to TRUE.