Windows Vista has a couple extra required steps to work with an Ethernet Disk Mini/Big Disk.
Windows networking fails to connect to the Ethernet Disk due to the version of samba on drive. Vista defaults to using NTLMv2 for its security policy. The drive uses Samba v.3.0.9, which only supports NTLM.
To fix this, the LAN Authentication level must be reconfigured using the "secpol" program to log in.
You should now be able to connect without error.
FTP will work without any additional configuration.
The USB Logon program must be run as the Administrator. Right click the program and choose "Run as administrator..." The drive should work as expected.