Data Driven Test error in VS2010 using MSTest

[Musether]

I have built a bunch of tests for my employer using Test Driven Development. I am now trying to use Data Driven Development for these tests. Unfortunately, whenever I try to setup the Data Connection String with an XML file, Visual Studio 2010 keeps giving me the same error.I don't have a high enough reputation on the site to post an image. The error says, "Error trying to sample data from , please make sure the file is valid.I have tried a simple XML files instead of my more complex one. I have set the "Copy to Output Directory" property for the file to "Copy Always". I have tried to manually fill in the data source attribute instead of using the wizard. I have gone to test -> edit local test settings and enabled deployment. I am out of ideas can anyone help. Perhaps it is the way I am making the xml files? I have been building them in notepad+ and saving with .xml.Thank you!