Maybe the change to loadinfo? Though I didn't think adding data to the end of the struct would have been a problem, it's been done already pretty recently. My DLLs still work. Maybe the DLL is accessing some identifier that's changed.
Edit: Protopia, your google-fu is weak,
http://hawkee.com/snippet/9541/ although the dropbox link there is broken and I certainly won't be clicking links from other sources I found
