Possible Duplicate:
Conditionally use 32/64 bit reference when building in Visual Studio
Following on from this question, I implemented the xml as described in the long answer.
I was expecting that when I changed the dropdown from 'x64' to 'x86', the references would change. Instead, I have 2 references, with a warning triangle on one of them. The paths are correct. However, building the project results in the wrong targeted version.
Why is this, and what should I do about it?