"Must use setCurrentEntity if select is not done through database"

After doing an insert of an account I want to change the "login" so I
call "account.update".  But it fails with a message of "Must use
setCurrentEntity if select is not done through database"... ?????
Anyone have a clue what his means?  

Otherwise, if it is not possible to change "login" what is the purpose
of account.update?

Date: Mon, 27 Feb 2006 20:17:27 GMT
Server: Apache/2.0.53 (Linux/SUSE)
content-type: text/xml
content-length: 322
Keep-Alive: timeout=15, max=91
Connection: Keep-Alive

<?xml
version='1.0'?><methodResponse><fault><value><struct><member><name>faultCode</name><value><int>0</int></value></member><member><name>faultString</name><value><string>Invalid
 argument: Must use setCurrentEntity if select is not done through 
database</string></value></member></struct></value></fault></methodResponse>

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