64-bit build: Librarian Error

[Mike via Digitalmars-d-dwt]

I started modifying the source for 64-bit, and trying to build 
base.

However, I'm getting this error:

Building dwt-base
workdir=>C:\Users\Mike\Desktop\GitHub\dwt\base\src
dmd.exe @C:\Users\Mike\Desktop\GitHub\dwt\rsp
lib.exe @C:\Users\Mike\Desktop\GitHub\dwt\rsp > 
C:\Users\Mike\Desktop\GitHub\dwt\olog.txt
object.Exception at build.d(173): librarian error
----------------
0x00403F88
0x00404D84
0x004059D1
0x00403C76
0x00414CE0
0x00414CB3
0x00414BCC
0x0040EDFF
0x7685919F in BaseThreadInitThunk
0x7750A8CB in RtlInitializeExceptionChain
0x7750A8A1 in RtlInitializeExceptionChain

olog.txt:
Digital Mars Librarian Version 8.02n
Copyright (C) Digital Mars 2000-2007 All Rights Reserved
http://www.digitalmars.com/ctg/lib.html

Error: Corrupt file 
'C:\Users\Mike\Desktop\GitHub\dwt\obj\java-beans-BeanDescriptor.obj', 
Typ=x34, Len=x616a

Any idea what this means?

Thanks,
Mike