Trouble with copying model objects

[dpelham]

Hello, I'm hoping someone can shed some light on my issue here. I'm trying to implement a copy operation in my .Net app that doesn't use the standard contentManagerService1.copy method. We need the ability to copy across different instances of Cognos, so essentially I'm recursively cloning the baseClass object and using "add".

So far, this has worked out great for everything except models. When attempting to clone a model and add it to Cognos, I get an InvalidOperationException with the message

"Client found response content type of 'multipart/related; type="text/xml"; boundary="1254173375020.9187126280740044103.483138764"', but expected 'text/xml'.
The request failed with an empty response."

Using the SDK's copy method doesn't produce this error, just the add method. Does anyone know if this is the result of some missing prop values that maybe the model object needs, and what they are?