[Bug 35305] New: Firefox 26.0 fails to launch: "Couldn't load XPCOM"

http://bugs.winehq.org/show_bug.cgi?id=35305

Bug ID: 35305
           Summary: Firefox 26.0 fails to launch: "Couldn't load XPCOM"
           Product: Wine
           Version: 1.7.9
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
    Classification: Unclassified

Running Ubuntu 13.10 Saucy Salamander, with wine-1.7.9 from the PPA.

I downloaded the latest Firefox 26.0 binary from getfirefox.com, deleted .wine/
and installed it.

Initially it wouldn't install, demanding Windows XP SP2 or later, so I set
version to win7 using winetricks.

Now it installs, but it won't run. Running it pops up a dialogue box: "Couldn't
load XPCOM"

Here's the complete command-line output from attempting to run it:

$ wine ~/.wine/drive_c/Program\ Files\ (x86)/Mozilla\ Firefox/firefox.exe 
fixme:heap:HeapSetInformation (nil) 1 (nil) 0
$