Resolution:
You need to do something like this:
Logon to the system
Start Transaction SM31
Enter 'T000' as the table name
Create a new entry with your preferred client number
Log off the system
Start a new gui logging on to the new client with user
'SAP*' and password 'pass'
Start transaction 'SCCL'
Use client 000 as source and your new client as target
Give it the 'go'
Wait for some time before you login
Notes:
You can also do all these steps through the menu:
Tools
Administration
Client Administration
Local Copy
