Hi,
In SAP portal transaction iview, we met the same error message.
maybe your can try the following steps:
1. apply 1970427 in snote
2. tcode sicf:
/default_host/sap/bc/gui/sap/its/webgui
add the following parameter in "GUI Configuration" button
parameter name: SAP-IE
value : EmulateIE8
Regards,
Stanley