Audacity suddenly wont start [SOLVED]

[Barrowman]

I have been using audacity for many years and suddenly it wont run.

Mint 17.3 kernel 3.19.0-32-generic #37~14.04.1-Ubuntu SMP

audacity 2.0.5

If I try to launch it from a terminal i get

(process:5626): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::sm-connect after class was initialised

(process:5626): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::show-crash-dialog after class was initialised

(process:5626): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::display after class was initialised

(process:5626): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::default-icon after class was initialised
ALSA lib pcm.c:2239snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2239snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2239snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
audacity: symbol lookup error: audacity: undefined symbol: Pa_GetStreamHostApiType

It will run if I launch it from a terminal this way:

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LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/ audacity

I have deleted .audacity and its contents, cleared the lock file, I ran ldconfig and tried removing and installing audacity again but nothing changes it.
The /usr/lib/x86_64-linux-gnu/ is in /etc/ld.so.conf.d/

I then uninstalled 2.05, deleted .audacity and the lock file.
I added the audacity ppa and installed 2.1.2 and get the same problem.
Does anyone know how to solve this please?

[Barrowman]

Thanks to a lot of help on the linuxquestions forum the problem is resolved for now at least
I just looked in /usr/local/lib and this is what I get.

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ll
total 1732
drwxr-xr-x  5 root root     4096 Jul 16 20:10 ./
drwxr-xr-x 10 root root     4096 Mar 24 15:58 ../
-rw-r--r--  1 root root  1168322 Jul 16 20:10 libportaudio.a
-rwxr-xr-x  1 root root      998 Jul 16 20:10 libportaudio.la*
lrwxrwxrwx  1 root root       21 Jul 16 20:10 libportaudio.so -> libportaudio.so.2.0.0*
lrwxrwxrwx  1 root root       21 Jul 16 20:10 libportaudio.so.2 -> libportaudio.so.2.0.0*
-rwxr-xr-x  1 root root   573641 Jul 16 20:10 libportaudio.so.2.0.0*
drwxr-xr-x  2 root root     4096 Jul 16 20:10 pkgconfig/
drwxrwsr-x  4 root staff    4096 Nov 28  2015 python2.7/
drwxrwsr-x  3 root staff    4096 Nov 28  2015 python3.4/

So it looks like all the libportaudio files were modified on July 16 and that seems to be the problem.

So I looked in /usr/lib/x86_64-linux-gnu

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ll libportaudio*
lrwxrwxrwx 1 root root     21 Feb  3 19:40 libportaudio.so.2 -> libportaudio.so.2.0.0
-rw-r--r-- 2 root root 188656 Feb 25  2014 libportaudio.so.2.0.0

so I renamed libportaudio.so.2.0.0 to oldlibportaudio.so.2.0.0 in /usr/local/lib
and created a new soft link to the one in /usr/lib/x86_64-linux-gnu

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ln /usr/lib/x86_64-linux-gnu/libportaudio.so.2.0.0 libportaudio.so.2.0.0

Now audacity works again.
Checked if vlc still runs with sound and it does. Don't know if there will be problems with other programs but no doubt I will find out eventually.