UPDATE: Commenters report this as the solution:

Flash >

\sudo  \apt-get  install  libcurl3:i386

The remainder of this page may also help. I have not tested this and have since abandoned this project.

Firstly, why in the motherfucking hell can I view a swf using my browser online but not use my browser offline to view an offline swf? This is madness.

I can download something, according to https://help.ubuntu.com/community/FlashPlayerStandalone

I visit was www.adobe.com/support/flashplayer/downloads.html and note that although the top of this page claims there is, there is no 64bit projector.

2015-06-05 - flashplayer_11_sa.i386 ∞

Tested on Lubuntu (Ubuntu 14.04.2 LTS), updated recently.

Attempting to run it gave a complaint. Every time it complained, I did something like so:

\dpkg  -S libXcursor.so.1

It would give me output like so:

libxcursor1:amd64: /usr/lib/x86_64-linux-gnu/libXcursor.so.1.0.2
libxcursor1:amd64: /usr/lib/x86_64-linux-gnu/libXcursor.so.1

One of these lines will be appropriate. Take it, and look at the left. Replace amd64 with i386 and install that. Like so:

\sudo  \apt-get  install  libxcursor1:i386

The complete list of stuff I had to install was:

\sudo  \apt-get  install \
  libglib2.0-0:i386 \
  libxt6:i386 \
  libxcursor1:i386 \
  libnss3:i386 \
  libgtk2.0-0:i386 \
` # `

However, this doesn't work. I can launch it, but when I attempt to open a swf I get I get:

(flashplayer:3371): GLib-GObject-WARNING **: instance with invalid (NULL) class pointer

(flashplayer:3371): GLib-GObject-CRITICAL **: g_signal_handlers_disconnect_matched: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

UPDATE: Commenters report this as the solution:

\sudo  \apt-get  install  libcurl3:i386