This is a release of the engine sample that has been converted to run on Visual Studio 2010. There were some major changes required to do this as the debugger UI now contains some managed code and is using a different pia than the original sample, which caused an unintentional breaking change. Any debug engine implemented in managed code must use Microsoft.VisualStudio.Debugger.InteropA.dll instead of Microsoft.VisualStudio.Debugger.Interop.dll like the original engine sample.