Hi, all my projects with VS2010 have platform Win32 and X64. I have qt installed in r:\qt480 for win32 and r:\qt480_64 for 64 Bit. As I have to deal with both platforms in one project, this is real tricky. When I run a debug session from VS2010, only win32 works, when I use 64 bit project, I get a error when QtCored4.dll, because the win32 DLL is started. So, the addin does not correctly set the pathes to the platform versions !