Flowblade fails to reopen file, hangs on error "IndexError: list index out of range"

Attempting to make a karaoke video. Saved project file. When reopening, flowblade fails to open the file. Please advise. UI shows Loading Project window, loading bar says: `Building track 4 - Multiline Text` Loading Project does not change after this. Opened terminal and ran flowblade, then attempted to open the file; received the following: ``` LOWBLADE MOVIE EDITOR 2.12.0.2 ------------------------------- LaunIndexError: list index out of rangech script dir: /usr/bin Running from installation... modules path: /usr/share/flowblade/Flowblade MLT found, version: 7.22.0 Application version: 2.12.0 OS: Ubuntu 24.04.3 LTS Python 3.12.3 (main, Jan 22 2026, 20:57:42) [GCC 13.3.0] GTK+ version: 3.24.41 Locale: en_US Translations at /usr/share/locale were not found, using program root directory translations. Use OS locale language. Valid shortcut files found: ['flowblade.xml', 'premiere.xml'] Keyboard shortcuts file: flowblade.xml Using Full Screen size for layout: 1920 x 1080 Small height: False Small width: False Detecting environment... --- video_codecs: - a64multi - a64multi5 - alias_pix - amv - apng - asv1 - asv2 - avrp - avui - ayuv - bitpacked - bmp - cfhd - cinepak - cljr - dnxhd - dpx - dvvideo - exr - ffv1 - ffvhuff - fits - flashsv - flashsv2 - flv - gif - h261 - h263 - h263p - hap - huffyuv - jpeg2000 - jpegls - ljpeg - magicyuv - mjpeg - mpeg1video - mpeg2video - mpeg4 - msmpeg4v2 - msmpeg4 - msrle - msvideo1 - pam - pbm - pcx - pfm - pgm - pgmyuv - phm - png - ppm - prores - prores_aw - prores_ks - qoi - qtrle - r10k - r210 - rawvideo - roqvideo - rpza - rv10 - rv20 - sgi - smc - snow - speedhq - sunrast - svq1 - targa - tiff - utvideo - v210 - v308 - v408 - v410 - vbn - vc2 - wbmp - wrapped_avframe - wmv1 - wmv2 - xbm - xface - xwd - y41p - yuv4 - zlib - zmbv - hdr - libaom-av1 - libjxl - libopenjpeg - librav1e - libsvtav1 - libtheora - libvpx - libvpx-vp9 - libwebp_anim - libwebp - libx264 - libx264rgb - libx265 - libxvid - h263_v4l2m2m - av1_nvenc - av1_qsv - av1_vaapi - h264_nvenc - h264_qsv - h264_v4l2m2m - h264_vaapi - hevc_nvenc - hevc_qsv - hevc_v4l2m2m - hevc_vaapi - mjpeg_qsv - mjpeg_vaapi - mpeg2_qsv - mpeg2_vaapi - mpeg4_v4l2m2m - vp8_v4l2m2m - vp8_vaapi - vp9_vaapi - vp9_qsv - vnull ... --- audio_codecs: - comfortnoise - s302m - aac - ac3 - ac3_fixed - alac - aptx - aptx_hd - dca - dfpwm - eac3 - flac - g723_1 - mlp - mp2 - mp2fixed - nellymoser - opus - real_144 - sbc - sonic - sonicls - truehd - tta - vorbis - wavpack - wmav1 - wmav2 - pcm_alaw - pcm_bluray - pcm_dvd - pcm_f32be - pcm_f32le - pcm_f64be - pcm_f64le - pcm_mulaw - pcm_s8 - pcm_s8_planar - pcm_s16be - pcm_s16be_planar - pcm_s16le - pcm_s16le_planar - pcm_s24be - pcm_s24daud - pcm_s24le - pcm_s24le_planar - pcm_s32be - pcm_s32le - pcm_s32le_planar - pcm_s64be - pcm_s64le - pcm_u8 - pcm_u16be - pcm_u16le - pcm_u24be - pcm_u24le - pcm_u32be - pcm_u32le - pcm_vidc - roq_dpcm - adpcm_adx - adpcm_argo - g722 - g726 - g726le - adpcm_ima_amv - adpcm_ima_alp - adpcm_ima_apm - adpcm_ima_qt - adpcm_ima_ssi - adpcm_ima_wav - adpcm_ima_ws - adpcm_ms - adpcm_swf - adpcm_yamaha - libcodec2 - libgsm - libgsm_ms - libmp3lame - libopus - libshine - libspeex - libtwolame - libvorbis - anull ... --- formats: - a64 - ac3 - ac4 - adts - adx - aiff - alp - amr - amv - apm - apng - aptx - aptx_hd - argo_asf - argo_cvg - asf - ass - ast - asf_stream - au - avi - avif - avm2 - avs2 - avs3 - bit - caf - cavsvideo - codec2 - codec2raw - crc - dash - data - daud - dfpwm - dirac - dnxhd - dts - dv - eac3 - evc - f4v - ffmetadata - fifo - fifo_test - filmstrip - fits - flac - flv - framecrc - framehash - framemd5 - g722 - g723_1 - g726 - g726le - gif - gsm - gxf - h261 - h263 - h264 - hash - hds - hevc - hls - ico - ilbc - image2 - image2pipe - ipod - ircam - ismv - ivf - jacosub - kvag - latm - lrc - m4v - md5 - matroska - matroska - microdvd - mjpeg - mlp - mmf - mov - mp2 - mp3 - mp4 - mpeg - vcd - mpeg1video - dvd - svcd - mpeg2video - vob - mpegts - mpjpeg - mxf - mxf_d10 - mxf_opatom - null - nut - obu - oga - ogg - ogv - oma - opus - alaw - mulaw - vidc - f64be - f64le - f32be - f32le - s32be - s32le - s24be - s24le - s16be - s16le - s8 - u32be - u32le - u24be - u24le - u16be - u16le - u8 - psp - rawvideo - rm - roq - rso - rtp - rtp_mpegts - rtsp - sap - sbc - scc - film_cpk - segment - stream_segment,ssegment - smjpeg - smoothstreaming - sox - spx - spdif - srt - streamhash - sup - swf - tee - 3g2 - 3gp - mkvtimestamp_v2 - truehd - tta - ttml - uncodedframecrc - vc1 - vc1test - voc - vvc - w64 - wav - webm - webm_dash_manifest - webm_chunk - webp - webvtt - wsaud - wtv - wv - yuv4mpegpipe - chromaprint - alsa - caca - fbdev - opengl - oss - pulse - sdl,sdl2 - video4linux2,v4l2 - xv ... MLT detection succeeded, 187 formats, 127 video codecs and 85 audio codecs found. 700 MLT services found. Loading render profiles... ffmpeg version 6.1.1-3ubuntu5 Copyright (c) 2000-2023 the FFmpeg developers built with gcc 13 (Ubuntu 13.2.0-23ubuntu3) configuration: --prefix=/usr --extra-version=3ubuntu5 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --disable-omx --enable-gnutls --enable-libaom --enable-libass --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libharfbuzz --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-openal --enable-opencl --enable-opengl --disable-sndio --enable-libvpl --disable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-ladspa --enable-libbluray --enable-libjack --enable-libpulse --enable-librabbitmq --enable-librist --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libx264 --enable-libzmq --enable-libzvbi --enable-lv2 --enable-sdl2 --enable-libplacebo --enable-librav1e --enable-pocketsphinx --enable-librsvg --enable-libjxl --enable-shared libavutil 58. 29.100 / 58. 29.100 libavcodec 60. 31.102 / 60. 31.102 libavformat 60. 16.100 / 60. 16.100 libavdevice 60. 3.100 / 60. 3.100 libavfilter 9. 12.100 / 9. 12.100 libswscale 7. 5.100 / 7. 5.100 libswresample 4. 12.100 / 4. 12.100 libpostproc 57. 3.100 / 57. 3.100 ['ffmpeg', '-version'] return code: 0 ffmpeg CLI available Loading filters... MLT service frei0r.alpha0ps_alphagrad not found. MLT service frei0r.alpha0ps_alphaspot not found. MLT service frei0r.alpha0ps_alpha0ps not found. Loading transitions... G'MIC found Player initialized with profile: HD 1080p 30 fps Create SDL1 consumer... Autosave started... Saving project... GPU test results {'NVENC H.264 High Profile / .mp4': 0, 'NVENC HEVC / .mp4': 0, 'NVENC HEVC HDR / .mp4': -11, 'VAAPI H.264 / .mp4': -11} Exception in thread Thread-2: Traceback (most recent call last): File "/usr/lib/python3.12/threading.py", line 1073, in _bootstrap_inner self.run() File "/usr/share/flowblade/Flowblade/projectaction.py", line 131, in run project = persistance.load_project(self.filename) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/share/flowblade/Flowblade/persistance.py", line 474, in load_project fill_sequence_mlt(seq, project.SAVEFILE_VERSION) File "/usr/share/flowblade/Flowblade/persistance.py", line 520, in fill_sequence_mlt fill_track_mlt(mlt_track, py_track) File "/usr/share/flowblade/Flowblade/persistance.py", line 614, in fill_track_mlt clip.path = get_img_seq_media_path(clip.path, _load_file_path) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/share/flowblade/Flowblade/persistance.py", line 757, in get_img_seq_media_path look_up_file = asset_folder + "/" + utils.get_img_seq_glob_lookup_name(asset_file_name) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/share/flowblade/Flowblade/utils.py", line 358, in get_img_seq_glob_lookup_name end = parts1[1].split("d")[1] ~~~~~~^^^ IndexError: list index out of range ```