dsetup.dll change between v44 and v50d breaks world server login

[Leonhard]

With v50d and v50h, the client hangs immediately after selecting the blue or green server on the server login (Pressing the "PLAY EVERQUEST!" button). The client doesn't even load up the eq welcome splash screen w/ nostalgic midi music.

If I replace dsetup.dll v44, the client will successfully login to the world server, but of course I get the error message to update to the latest patch on the char select screen. However, this suggests that a change between dsetup.dll v44 and v50d is the source of the issue.

w/ v44 dsetup.dll, EverQuest/Log/dbg.txt: http://dpaste.com/1ETHQW5
- Looks normal. The client gets to WorldAuthenticate and beyond.

w/ v50d dsetup.dll, EverQuest/Log/dbg.txt: http://dpaste.com/25TS3ED
- Gets stuck after "Sound Manager loaded 2165 filenames from soundassets.txt.", which is shortly before connecting to the world server and WorldAuthenticate.


Where can I find the intermediate versions? With those, I can narrow down the issue to a specific version bump, which would help devs determine what dsetup.dll change could have caused this. Is there an archive? Or can someone send them to me? Last time I played, the server was still on v44, so that's all I have.

Other things I've tried:
- No Anti-virus
- The green beta files, v50h, also have the same problem on both blue and green.
- UIErrors.txt is empty in both v44 and v50d cases.
- Set eqclient.ini to windowed 800x600
- Switched between v50d's dsetup.dll & v44's dsetup.dll numerous times. v44's consistently works, while v50d's consistently hangs the process.

Thanks!