[Bug 1335388] [NEW] Firefox 30 does not play flash files

[Malaise]

Public bug reported:

After upgrading to Xubuntu 14.04 I cannot play local swf files int
Firefox any more. Was OK in 13.10.

I get the window "You have chosen to open: xxx.swf which is: Shockwave Flash file (yyyMB) from: /home/...
What should Firefox do with this file?
- Open with (Parole/Other...)
- Save File
Do this automatically...

Reinstalling 14.04 completely (and installing flashplugin-installer) and creating a new user does not help.
Of course this works well with flash embedded in html pages.

In Firefox, there are 2 entries in the applications menu, one for"shockwave flash files" and the other for "SWF", as described in https://support.mozilla.org/en-US/questions/995797.
I cannot link the action "Use shockwave flash (in Firefox)" to the type "shockwave flash files" as it is for "SWF file".

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: firefox 30.0+build1-0ubuntu0.14.04.3
ProcVersionSignature: Ubuntu 3.13.0-30.54-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic i686
AddonCompatCheckDisabled: False
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  malaise    2839 F.... pulseaudio
BuildID: 20140608211132
Channel: Unavailable
CurrentDesktop: XFCE
Date: Sat Jun 28 09:16:51 2014
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
IncompatibleExtensions:
 English (South Africa) Language Pack - langpack-en-ZA at firefox.mozilla.org
 English (GB) Language Pack - langpack-en-GB at firefox.mozilla.org
 Default - {972ce4c6-7e08-4474-a285-3208198ce6fd}
InstallationDate: Installed on 2014-06-15 (12 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140416.2)
IpRoute:
 default via 192.168.0.254 dev wlan0  proto static 
 192.168.0.0/24 dev wlan0  proto kernel  scope link  src 192.168.0.5  metric 9
Plugins: Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
PrefSources:
 prefs.js
 [Profile]/extensions/{b9db16a4-6edc-47ec-a1f4-b86292ed211d}/defaults/preferences/prefs-dwhelper.js
Profiles: Profile0 (Default) - LastVersion=30.0/20140608211132 (In use)
RunningIncompatibleAddons: True
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/02/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: H0ET94WW (2.54 )
dmi.board.asset.tag: Not Available
dmi.board.name: 3259CGG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrH0ET94WW(2.54):bd08/02/2013:svnLENOVO:pn3259CGG:pvrThinkPadEdgeE530:rvnLENOVO:rn3259CGG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 3259CGG
dmi.product.version: ThinkPad Edge E530
dmi.sys.vendor: LENOVO

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 trusty

** Attachment added: "Applications.png"
   https://bugs.launchpad.net/bugs/1335388/+attachment/4141129/+files/Applications.png

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Title:
  Firefox 30 does not play flash files

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