Error Message:

Packaging the account... Done
Transfer Error

The remote server didn't report a correct md5sum of the archive. Please ensure you selected the correct type of remote server

Affected Machines:

Cpanel/WHM
WHM 10.1.0 cPanel 10.2.0-R82  - could be others
RedHat 9 i686 - WHM X v3.1.0

Resolution:

1) Login to root SSH
2) Run /scripts/pkgacct username (replace username with the account's username)
3) Make sure the pkgacct finished, to be sure try to see the md5sum of the created archive.
4) cd /home then ls to see the file. It should look like cpmove-username.tar.gz run md5sum cpmove-username.tar.gz
5) If you don't see the /home/cpmove-username.tar.gz but you see cpmove-username-split then run the /scripts/pkgacct again.
6) Proceed to transfer again through WHM once again, it will have a new md5sum and should work.
7) If all the above and still doesn't work then take the /home/cpmove-username.tar.gz and copy it to the users directory. cp cpmove-username.tar.gz /home/username/public_html
8) (Remote Machine) Login to the remote machine and su to root: wget ipaddress/~username/cpmove-username.tar.gz
9) (Remote Machine) mv cpmove-username.tar.gz /home
10) (Remote Machine) Login to main WHM under Backup, click Restore a Full Backup/cpmove file
11) Enter the username and click restore. You can also do /scripts/restorepkg username in Shell.