There shouldn't be a difference between Office 2007 ultimate and enterprise
for what you're doing. I run both here.

If you select the addin in the COM Add-Ins dialog in the Trust Center when
you try to check it does it show any load errors from mscorlib or any other
source? If so it's either a trust issue or a lack of some dependency at
least in my experience. There's no way to tell from here what's missing
though.

What about any other addins or software running on that computer? Outlook
addins, synch software, stuff like that where there's Outlook integration,
even A-V products that integrate with Outlook.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007
Reminder Manager, Extended Reminders, Attachment Options
http://www.slovaktech.com/products.htm


"shubhangi" wrote in message
...
Thanks Ken
Yes the security setup for CAS run correctly.I checked the
settings -fulltrust permission
appears in framework configuration.all prerequisites also exist.The m/c on
which it gives
problem is having Office ultimate 2007 whereas other 2 machines have
Office enterprise 2007.
I'm still finding the cause behind this behavior but invain..