I have a me.com address that works on my iPad and on my Mac.
However, I am trying to set up iCloud to sync all of my devices on my Mac using the instructions found here, http://www.apple.com/icloud/setup/mac.html
When I get to the second part of step 2 and check the Mail radio-box, I get a pop-up asking me to create an iCloud email address. I enter my me.com address and get this message, "This email address is already taken. Try picking a new one."
Am I supposed to create a SECOND me.com address for iCloud? Should my current me.com address work? Won't 2 addresses just confuse things further? What can I do to troubleshoot?
A side-note. Last night I successfully migrated data from gmail to my me.com calendar and address book. Everything worked successfully on my Mac but I cannot see any of the updates on my iPad. I want these updates on my Mac to push onto my iPad and I wonder if this issue is creating the problem. Everything seems to be working on the individual devices just not on the Cloud.
Best Answer
If you didn't migrate your old MobileMe account to iCloud before it expired last june you may be locked out of that old account.
Here is the list of things you can still do if your MobileMe email expired and how to add a new email address to that Apple ID.