[Bug 27747] New: Unity web player reports engine not installed, autoupdate fails

http://bugs.winehq.org/show_bug.cgi?id=27747

Summary: Unity web player reports engine not installed,
                    autoupdate fails
           Product: Wine
           Version: 1.3.24
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Tried
   rm -rf ~/.wine
   winetricks -q --no-isolate flash firefox35
   wget http://webplayer.unity3d.com/download_webplayer-3.x/UnityWebPlayer.exe
   wine UnityWebPlayer.exe
   cd ~/.wine/drive_c
   wine cmd /c run-firefox35.bat http://unity3d.com/webplayer
All seemed to go well, but the status box on the lower right said

Unity Plugin version:
3.3.0f4
Unity Engine version:
not installed

That's a bit worrying.  But I tried the demos at
http://unity3d.com/gallery/live-demos
anyway; they all start an autoupdate of the web player, then fail; if you ask
for details, it says 
"A newer version of Unity Web Player is required,
but the auto-update download failed.
Was trying to download
http://webplayer.unity3d.com/autodownload_webplugin-3.x/UnityPlayer3.x.x-win..."

I downloaded the file manually and peeked inside it;
it contains UnityEngine.dll and a few other things.
Doing find ~/.wine -name UnityEngine.dll found it in
c:/users/dank/Temp/UnityWebPlayer/UnityWebPluginUpdate-5b1a87d831f27647bddce989c83c9769/

So perhaps the download succeeded, but there was some error
right after unpacking the zipfile.  After some futzing, I
found that you can get past the download/unpack problem
by downloading and unpacking two zipfiles by hand; see
attached script.  So that's what's supposed to be happening...
dunno why it doesn't happen in wine.