Was this project using any interop from COM? I am pretty sure MSDASC has something to do with datalinks and ADO.

I saw this article which states:

When you add a COM component to a .NET project an assembly with an Interop prefix is added to the project. For example, adding the service component adds a dynamically generated wrapper for the COM component named Interop.MSDASC.dll. This Interop assembly is generated and compiled using the CodeDOM behind the scenes, and you will need to deploy the COM DLL and the Interop assembly with you application.
If you are, maybe you just need to remove and readd any COM references in this project (especially any ones that have to do with data)