Save attachment files from webmail issue

Since few weeks now we encounter new issue with webmail utilization (mail8.ntf).

Using Domino 8.0.2 FP6/x32/2003R2.

IE8, webmail redirector and mail8.ntf official template

When using any user mailbox under IE, if we open a message and trying to save locally any attachment we have an error message :

HTTP Web Server: Couldn’t find design note

  • 0/$File [/mail/myuser.nsf/0/$File/?OpenElement&1294915998&FileName=mytestfile.xls]

This error does not appear when : using Lite mode or Firefox browser or the preview pane in full mode

This happend on any mailboxes, on any of our servers, on any of the attachment files/kind.

We try to fix/compact/replace template of the users mailboxes with no success.

Any ideas?

Thanks in advance

/Xavier