Linking on MS Windows.

[ciechowoj via Digitalmars-d-learn]

I managed to compile both 32 and 64 bit release versions and it 
seems to work fine, however with 64-bit debug version I'm getting 
a strange error:

LINK : fatal error LNK1101: incorrect MSPDB120.DLL version; 
recheck installation of this product

Does anyone know why it is so? I'm compiling with -m64 switch, so 
I suppose the linker from Visual Studio is used by default.

Another question that is troubling me is why to use OPTLINK as a 
default for 32-bit version, if for 64-bit version a Visual Studio 
linker is used anyway?