jsonws permission error in liferay 6.1.0

[mokhtar hatampoor, modificado hace 7 años.]

hi dears
i work with liferay 6.1.0 and tomcat 6.
when i use jsonws for web services if the entity has guest permission , it's work
but when remove guest permission and use with user pass , error is :

{"exception": "com.liferay.portal.security.auth.PrincipalException"}

but when use liferay 6.2 this problem not exist and all is ok.
for test with user pass i use URL login for example :
http://[e-mail]@test:localhost:8080/api/jsonws/pollsquestion/get-question/questionId/569901

and soapui:
with basic authorization (file attach)
where is wrong????