myssocntl blank page

Dear All,

I'm facing a problem that, after I updated my Solution Manager from 7.1 SP04 to SP12, T-Code: SOAMANAGER, SOLMAN_SETUP, SOLMAN_CONNECT eg goes to an blank page:

http://<hostname>:xxxx/sap/public/myssocntl?sap-client=xxx

but, if i use the url:

SOAMANAGER: http://<hostname>:xxxx/sap/bc/webdynpro/sap/appl_soap_management?sap-client=xxx&sap-language=EN

SOLMAN_SETUP: http://<hostname>:xxxx/sap/bc/webdynpro/sap/wd_sise_main_app?sap-language=ZH

it goes well.

I've checked all relevant thread:

myssocntl page is coming blank

SOLMAN_SETUP giving a blank page

solman_setup shows blank page

SOAMANAGER - opens up an blank IE window

and the problem still remains.

Seems many people ever meet this problem.

Does anyone has any ideas, this stucked me a long time?

Thank you very much!