Dear Cris,
While I've to wait for my basis colleagues to deal with the kernel, I've applied note 1995776 as suggested but the problem is still there.
Attached is the images showing on the left that the dialog box asking the destination folder can be displayed if I test the service directly from sicf; while on the right showing that the dialog box cannot be shown when it is called from the protal iview, and the portal just stall at this step and did not response no matter which button I click except closing the browser (or this tab page).
Thanks,
Francis