Attempting to run on Win7 x64 the program crashes on launch with the error id 0x80000003. This is because the libraries and tools are compiled for x86 and the Miro project is set to "Any CPU" - with the natural result that the application is trying to run in 64bit mode on my 64bit CPU, but the libraries aren't.
Fix is simple: Open the properties of the Windows project, go to the Build tab and set Platform target to x86. Recompile and run. It'd be good if a new micro release was created with this problem solved.