http://bugs.winehq.org/show_bug.cgi?id=21071
--- Comment #5 from Vincent Povirk madewokherd@gmail.com 2009-12-19 14:14:03 --- Looks like I screwed up STGM_SIMPLE mode. The first time StorageImpl_StreamWriteAt is used, it will assume the stream has been set to the size it asked for and try to write to a small block chain instead of a big block chain.