I exited the virtual machine and created a snapshot. Upon attempting to restart the machine i get the following message.
"Cannot attach medium '/Applications/VirtualBox.app/Contents/MacOS/VBoxGuestAdditions.iso' {4d3360b1-6129-4959-91bd-00cdd9fef6d2} from snapshot 'e6b30af1-4e40-4862-aaf3-1f626d62808a': medium is already in use by this snapshot!.
Result Code:
NS_ERROR_FAILURE (0x80004005)
Component:
Medium
Interface:
IMedium {1d578f43-5ef1-4415-b556-7592d3ccdc8f}"