Adding a BindingRepresentation through the API

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   Hello,

I've created a small language for production systems (these production systems can assemble APC's) using MetaEdit+, and I'm trying to simulate my models using the API. One of the things that needs to be done is that an operator needs to be moved to another machine. The relationship looks like this:

MachineOperator --> MachineOperatorToProcessor --> Processor

I can remove the old binding and its representation, as well as create a new one. However, I cannot create a new representation for it. My code runs just fine, but when I try to open my model in MetaEdit+, it gives me the following error:

"Unhandled exception: Message not understood: #-

Press Proceed (if shown) to attempt to ignore the error and continue.
..."

The proceed option doesn't work and I'm basically left with a corrupted model. I cannot open the diagram representation anymore, the matrix representation however does still work. It shows there that the new binding has been created (so the operator conceptually moved, it just can't show it for some reason).

Here is the relevant part of my code (I'm working in Python with the suds library). 'self.instance' is the object MEOop of the operator, 'self.parent.diagram' is the diagram representation MEOop of the Graph I'm working on. The objectID and areaID of the binding are hardcoded for performance reasons. Obviously this will have to change, but they are the correct values.

relRep = client.factory.create('ns0:MEOop')
relRep.areaID = 11
relRep.objectID = 2426

place = client.service.place(relRep)            
client.service.remove(relRep)

relationType = client.factory.create('ns0:METype')
relationType.name = 'MachineOperatorToProcessor'
role0 = client.factory.create('ns0:METype')
role0.name = 'toProcessor'
role1 = client.factory.create('ns0:METype')
role1.name = 'fromOperator'
binding = client.service.createBinding(self.parent.instance, relationType, [role0, role1], [self.instance, nextProcessor.instance])
client.service.addNewBindingRepFor(self.parent.diagram, binding, 1, place)

Can someone tell me what I'm doing wrong?

Thanks!