Gst python errors

pi@scarlettpi ~/dev/scarlettPi/scripts/pi $ pi
/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:57: GtkWarning: could not open display
  warnings.warn(str(e), _gtk.Warning)
INFO: cmd_ln.c(691): Parsing command line:
gst-pocketsphinx \
    -samprate 8000 \
    -cmn prior \
    -fwdflat no \
    -bestpath no \
    -maxhmmpf 2000 \
    -maxwpf 20

Current configuration:
[NAME]      [DEFLT]     [VALUE]
-agc        none        none
-agcthresh  2.0     2.000000e+00
-alpha      0.97        9.700000e-01
-ascale     20.0        2.000000e+01
-aw     1       1
-backtrace  no      no
-beam       1e-48       1.000000e-48
-bestpath   no      no
-bestpathlw 9.5     9.500000e+00
-bghist     no      no
-ceplen     13      13
-cmn        current     prior
-cmninit    8.0     8.0
-compallsen no      no
-debug              0
-dict
-dictcase   no      no
-dither     no      no
-doublebw   no      no
-ds     1       1
-fdict
-feat       1s_c_d_dd   1s_c_d_dd
-featparams
-fillprob   1e-8        1.000000e-08
-frate      100     100
-fsg
-fsgusealtpron  yes     yes
-fsgusefiller   yes     yes
-fwdflat    yes     no
-fwdflatbeam    1e-64       1.000000e-64
-fwdflatefwid   4       4
-fwdflatlw  8.5     8.500000e+00
-fwdflatsfwin   25      25
-fwdflatwbeam   7e-29       7.000000e-29
-fwdtree    yes     yes
-hmm
-input_endian   little      little
-jsgf
-kdmaxbbi   -1      -1
-kdmaxdepth 0       0
-kdtree
-latsize    5000        5000
-lda
-ldadim     0       0
-lextreedump    0       0
-lifter     0       0
-lm
-lmctl
-lmname     default     default
-logbase    1.0001      1.000100e+00
-logfn
-logspec    no      no
-lowerf     133.33334   1.333333e+02
-lpbeam     1e-40       1.000000e-40
-lponlybeam 7e-29       7.000000e-29
-lw     6.5     6.500000e+00
-maxhmmpf   -1      2000
-maxnewoov  20      20
-maxwpf     -1      20
-mdef
-mean
-mfclogdir
-min_endfr  0       0
-mixw
-mixwfloor  0.0000001   1.000000e-07
-mllr
-mmap       yes     yes
-ncep       13      13
-nfft       512     512
-nfilt      40      40
-nwpen      1.0     1.000000e+00
-pbeam      1e-48       1.000000e-48
-pip        1.0     1.000000e+00
-pl_beam    1e-10       1.000000e-10
-pl_pbeam   1e-5        1.000000e-05
-pl_window  0       0
-rawlogdir
-remove_dc  no      no
-round_filters  yes     yes
-samprate   16000       8.000000e+03
-seed       -1      -1
-sendump
-senlogdir
-senmgau
-silprob    0.1     1.000000e-01
-smoothspec no      no
-svspec
-tmat
-tmatfloor  0.0001      1.000000e-04
-topn       4       4
-topn_beam  0       0
-toprule
-transform  legacy      legacy
-unit_area  yes     yes
-upperf     6855.4976   6.855498e+03
-usewdphones    no      no
-uw     1.0     1.000000e+00
-var
-varfloor   0.0001      1.000000e-04
-varnorm    no      no
-verbose    no      no
-warp_params
-warp_type  inverse_linear  inverse_linear
-wbeam      7e-29       7.000000e-29
-wip        1e-4        1.000000e-04
-wlen       0.025625    2.562500e-02

Traceback (most recent call last):
  File "/usr/local/bin/pi", line 5, in <module>
    pkg_resources.run_script('pi==0.1.0', 'pi')
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 499, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 1235, in run_script
    execfile(script_filename, namespace, namespace)
  File "/usr/local/lib/python2.7/dist-packages/pi-0.1.0-py2.7.egg/EGG-INFO/scripts/pi", line 38, in <module>
    listener = Listener(gobject, gst)
  File "/usr/local/lib/python2.7/dist-packages/pi-0.1.0-py2.7.egg/pi/listener.py", line 103, in __init__
    self.pocketsphinx.link(self.rectee)
gst.LinkError: failed to link listener with rectee