Comment 1 for bug 1259804

You seem to have a problem with your theme by default (in Lubuntu).
For having the version of MLT, .... take a look at this FAQ :
https://answers.launchpad.net/openshot/+faq/2245
This one should help you.

2013/12/17 Daniel <email address hidden>

> ** Also affects: fedora
> Importance: Undecided
> Status: New
>
> --
> You received this bug notification because you are a member of OpenShot
> Bugs, which is subscribed to OpenShot Video Editor.
> https://bugs.launchpad.net/bugs/1259804
>
> Title:
> crashes with every edit
>
> Status in OpenShot Video Editor:
> New
> Status in Fedora:
> New
>
> Bug description:
> It started out infrequently. Now every time I do anything, the next
> time I click play or move the playhead, it crashes.
>
> Lubuntu 13.04 on a 6 year old Dell Dimension 32 bit
>
> Installed openshot through lubuntu software center.
>
> I don't know how to find version of MLT.
>
> From terminal:
>
> media@Media:~$ openshot
>
> ------------------------- ERROR 1 ------------------------------
> Failed to import 'from openshot import main'
> Error Message: cannot import name main
> ----------------------------------------------------------------
> --------------------------------
> OpenShot (version 1.4.3)
> --------------------------------
> Process no longer exists: 2092. Creating new pid lock file.
>
> Detecting formats, codecs, and filters...
> WARNING: gnome-keyring:: couldn't connect to:
> /run/user/media/keyring-XABvpk/pkcs11: No such file or directory
> ---
> video_codecs:
> - a64multi
> - a64multi5
> - asv1
> - asv2
> - bmp
> - cljr
> - dnxhd
> - dpx
> - dvvideo
> - ffv1
> - ffvhuff
> - flashsv
> - flv
> - gif
> - h261
> - h263
> - h263p
> - huffyuv
> - jpegls
> - ljpeg
> - mjpeg
> - mpeg1video
> - mpeg2video
> - mpeg4
> - msmpeg4v2
> - msmpeg4
> - pam
> - pbm
> - pcx
> - pgm
> - pgmyuv
> - png
> - ppm
> - qtrle
> - rawvideo
> - roqvideo
> - rv10
> - rv20
> - sgi
> - snow
> - svq1
> - targa
> - tiff
> - v210
> - v410
> - wmv1
> - wmv2
> - zlib
> - zmbv
> - libschroedinger
> - libtheora
> - libvpx
> ...
> ---
> audio_codecs:
> - aac
> - ac3
> - ac3_fixed
> - alac
> - eac3
> - flac
> - mp2
> - nellymoser
> - real_144
> - vorbis
> - wmav1
> - wmav2
> - roq_dpcm
> - adpcm_adx
> - g722
> - g726
> - adpcm_ima_qt
> - adpcm_ima_wav
> - adpcm_ms
> - adpcm_swf
> - adpcm_yamaha
> - libgsm
> - libgsm_ms
> - libspeex
> - libvorbis
> ...
> ---
> formats:
> - a64
> - ac3
> - adts
> - adx
> - aiff
> - amr
> - asf
> - ass
> - asf_stream
> - au
> - avi
> - avm2
> - cavsvideo
> - crc
> - daud
> - dirac
> - dnxhd
> - dts
> - dv
> - eac3
> - ffm
> - ffmetadata
> - filmstrip
> - flac
> - flv
> - framecrc
> - framemd5
> - g722
> - gif
> - gxf
> - h261
> - h263
> - h264
> - image2
> - image2pipe
> - ipod
> - ivf
> - latm
> - m4v
> - md5
> - matroska
> - matroska
> - mjpeg
> - mlp
> - mmf
> - mov
> - mp2
> - mp3
> - mp4
> - mpeg
> - vcd
> - mpeg1video
> - dvd
> - svcd
> - mpeg2video
> - vob
> - mpegts
> - mpjpeg
> - mxf
> - mxf_d10
> - null
> - nut
> - ogg
> - oma
> - alaw
> - mulaw
> - f64be
> - f64le
> - f32be
> - f32le
> - s32be
> - s32le
> - s24be
> - s24le
> - s16be
> - s16le
> - s8
> - u32be
> - u32le
> - u24be
> - u24le
> - u16be
> - u16le
> - u8
> - psp
> - rawvideo
> - rm
> - RoQ
> - rso
> - rtp
> - rtsp
> - sap
> - segment
> - smjpeg
> - sox
> - spdif
> - srt
> - swf
> - 3g2
> - 3gp
> - truehd
> - rcv
> - voc
> - wav
> - webm
> - yuv4mpegpipe
> - alsa
> - oss
> ...
> state saved
>
> ** (openshot:2174): WARNING **: Invalid borders specified for theme
> pixmap:
> /usr/share/themes/Lubuntu-default/gtk-2.0/images/null.png,
> borders don't fit within the image
>
> ** (openshot:2174): WARNING **: Invalid borders specified for theme
> pixmap:
>
> /usr/share/themes/Lubuntu-default/gtk-2.0/images/scrollbar_horizontal.png,
> borders don't fit within the image
>
> ** (openshot:2174): WARNING **: Invalid borders specified for theme
> pixmap:
> /usr/share/themes/Lubuntu-default/gtk-2.0/images/null.png,
> borders don't fit within the image
>
> ** (openshot:2174): WARNING **: Invalid borders specified for theme
> pixmap:
>
> /usr/share/themes/Lubuntu-default/gtk-2.0/images/scrollbar_vertical.png,
> borders don't fit within the image
>
> ** (openshot:2174): WARNING **: Invalid borders specified for theme
> pixmap:
>
> /usr/share/themes/Lubuntu-default/gtk-2.0/images/scrollbar_horizontal-sel.png,
> borders don't fit within the image
> on_mnuOpenProject_activate called with self.GtkImageMenuItem
> [mp3 @ 0x99305a0] max_analyze_duration reached
> [mp3 @ 0x9932c00] max_analyze_duration reached
> [mp3 @ 0x996b8e0] max_analyze_duration reached
> [mp3 @ 0x9942d80] max_analyze_duration reached
> [mp3 @ 0x9983ee0] max_analyze_duration reached
> [mp3 @ 0x9974460] max_analyze_duration reached
> [mp3 @ 0x997b900] max_analyze_duration reached
> [mp3 @ 0x9988c20] max_analyze_duration reached
> [mp3 @ 0x99bb8c0] max_analyze_duration reached
> [mp3 @ 0x99ed760] max_analyze_duration reached
> project state modified
> state saved
> NEW SDL CONSUMER
> [mp3 @ 0x9d97da0] max_analyze_duration reached
> [mp3 @ 0x9d9c480] max_analyze_duration reached
> [mp3 @ 0x9dbc9e0] max_analyze_duration reached
> [mp3 @ 0x9dbfc40] max_analyze_duration reached
> [mp3 @ 0x9e036c0] max_analyze_duration reached
> [mp3 @ 0x9e0cf40] max_analyze_duration reached
> [mp3 @ 0x9df3ee0] max_analyze_duration reached
> [mp3 @ 0x9e320e0] max_analyze_duration reached
> [mp3 @ 0x9e4d540] max_analyze_duration reached
> [mp3 @ 0x9e1bf80] max_analyze_duration reached
>
> ** (openshot:2174): WARNING **: Invalid borders specified for theme
> pixmap:
>
> /usr/share/themes/Lubuntu-default/gtk-2.0/images/scrollbar_vertical-sel.png,
> borders don't fit within the image
> [mp3 @ 0xa6d157c0] max_analyze_duration reached
> [mp3 @ 0xa6d13ba0] max_analyze_duration reached
> [mp3 @ 0xa6d09600] max_analyze_duration reached
> [mp3 @ 0xa6d40460] max_analyze_duration reached
> on_tlbAddMarker_clicked
> project state modified
> state saved
> [mp3 @ 0x99732a0] max_analyze_duration reached
> [mp3 @ 0x8ac0c40] max_analyze_duration reached
> [mp3 @ 0x9a18d20] max_analyze_duration reached
> [mp3 @ 0x8fd8ee0] max_analyze_duration reached
> [mp3 @ 0x91d0f80] max_analyze_duration reached
> [mp3 @ 0x9043dc0] max_analyze_duration reached
> [mp3 @ 0x944e980] max_analyze_duration reached
> [mp3 @ 0x9249dc0] max_analyze_duration reached
> [mp3 @ 0x8ac6520] max_analyze_duration reached
> [mp3 @ 0x8aca160] max_analyze_duration reached
> Segmentation fault (core dumped)
>
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>
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--
Olivier
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