Created user can not access folders

[KeyEvent]

I created an user called [EMAIL PROTECTED] as an root user with content.create() 
method (not with client tool). This account seems to be available in users.def.xml and 
/roles/root.def.xml, /users/[EMAIL PROTECTED] But an access denied exception occured 
when I try to access the /files folder:
//here throws the exception
object = structure.retrieve(slideToken, resourcePath);
 
slideToken owns the CredentialsToken of [EMAIL PROTECTED] principal. The node setting 
for /files is:
<objectnode classname="org.apache.slide.structure.SubjectNode" uri="/files">
                    <permission action="all" subject="unauthenticated" 
inheritable="false"/>
                    <permission action="/actions/write" subject="/roles/user" 
inheritable="false"/>
                    <permission action="/actions/read-acl" subject="owner" 
inheritable="false"/>
 
Any clue will be appreciated, thanks in advance.
Btw: is there any API can create the user directly?
 
Regards
 
 



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