LDC mspdb140 error x64

[Mike B Johnson via digitalmars-d-ldc]

LINK : fatal error LNK1171: unable to load mspdb140.dll (error 
code: 193)
Error: `VS\VC\Tools\MSVC\14.10.25017\bin\HostX86\x64\link.exe` 
failed with status: 1171

I'm pretty sure that it is using the x64 mspdb140.dll because 
procmon says it is

VS\VC\Tools\MSVC\14.10.25017\bin\HostX86\x64\mspdb140.dll

But maybe this isn't the correct one?

It seems to be looking in a bunch of dir's, including

ldc2\bin\mspdb140.dll

and the windows kit's, sdk, and VC dir, it finds them but I guess 
they are all x86.

It looks at

Windows Kits\8.1\bin\x64\mspdb140.dll

and just about every dir in the %path%... it finds many 
versions(x86 and x64) but never is satisfied.

and the dll is there but it doesn't use it.


Why does it need the pdb anyways? I thought that was for 
debugging?