What does this eKEY error code mean?

Supraekey.com has compiled a list of all the different eKEY error codes in one handy .pdf to assist in troubleshooting. You can find this list at http://www.supraekey.com/Documents/eKEYerrorcodes.pdf - it is an exhaustive list, but should help you figure out what's wrong with your eKEY if it is returning an error code.