I get this error with dmd 1.045. The _errno seems to be with the DAllegro (http://www.dsource.org/projects/dallegro) library. And the 42 one to do with some thing of mine.

>>
OPTLINK (R) for Win32  Release 8.00.1
Copyright (C) Digital Mars 1989-2004  All rights reserved.
C:\jpro\dmd45\windows\bin\..\lib\SNN.lib(cinit)  Offset 08C2CH Record Type 0090

 Error 1: Previous Definition Different : _errno
main.obj(main)
 Error 42: Symbol Undefined _D22TypeInfo_C3jec3snd3Snd6__initZ
<<

Joel Christensen wrote:
See previous post.