Anyone has experienced this before?

iFolder was set up and I was able to login to the admin website withought
a problem. After my id got renamed, I could not get back in ("Your previos
login failed" message). So... I re-created my old user id, gave it the
same rights in NDS as before. Logged in just fine. When I tried to add my
new user id to the list of admins and got a message "modifyObject:
Insufficient access". Any ideas how I can fix this?

Thank you,