VSTO add-in and remoting

[edamron]

I have a Word 2007 ribbon add-in that works fine. I now want to add
remoting to my add-in so that our macros can access a database. I
have developed some proof of concept code that works when I run the
add-in from the IDE but the ribbon add-in does not display when run
after being installed.

I have tracked the problem down to one line of code that when
commented out the ribbon displays. The line is:

oSIClient = CType(Activator.GetObject( _
GetType(ISoftwareIntegration), _
"http://BIIAWK02425T:1234/
SoftwareIntegrationServer.soap"), _
ISoftwareIntegration)

Again, this code works when everything is run from the IDE.

I have signed all of the assemblies.

Any ideas? Thanks.