VisualD can't build x64, Internal error: backend\mscoffobj.c 2016

[ParticlePeter via Digitalmars-d-ide]

Building with dub works fine, I can even build with dub and debug 
the exe in VS2013/15. I generated the VisualD project from dub, 
tried debug and release, tried the recently released VisualD the 
version before both the same error. I tried to enable "Use 
MS-COFF object file format for Win32" on each separate project in 
the solution and confirmed that the linker for x64 is set to 
"$(VCINSTALLDIR)bin\link.exe" in the global project and solution 
settings.

What am I missing?