You say the error occurred when building the first project, would you clarify which this project is? Is it any of the "Getting Started" template projects?
I tested some of those samples with the In-Browser Client and so far I could not reproduce any issue while running an app in the simulator or building it in the cloud.
In order to be able to advice you further, may I ask you to share some additional information:
- Which client do you use (In-Browser, Windows or Extension for Visual Studio)?
- Let me know on which project you tested. It will be very helpful if this is accompanied with simple steps I should follow in order to replicate the case.
- Is there anything specific with your setup I should keep in mind?
Looking forward to hearing from you.