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TOPIC: Crash when right-clicking on sequence or in timeline

Crash when right-clicking on sequence or in timeline 4 months, 1 week ago #158494

  • fschopp
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System:
- macOS 10.12.6
- MacBook Pro (Retina, Mid 2012) 2.3 GHz
- Lightworks PRO14.0.0.0 (93145) from Apr 3, 2017

After working on a project the entire day and successfully exporting a sequence as YouTube video once, Lightwork suddenly crashed when I tried to delete a transition. The corresponding crash logs (both from ~/Lightworks/Logs/Backup and from ~/Library/Logs/DiagnosticReports) are attached (directory "first" in the attached zip).

Ever since that first crash, right-clicking on the sequence or in the timeline immediately crashes Lightworks with essentially the same stacktrace (see directory "afterwards" in the attached zip):
0   misc.dylib                    	0x000000010ce160e6 ole_splat(char const*) + 157
1   edit.dylib                    	0x000000010b8dedcb flatten_range_aux(Lw::Ptr<Cel, Lw::DtorTraits, Lw::InternalRefCountTraits>, Lw::Ptr<Cel, Lw::DtorTraits, Lw::InternalRefCountTraits>, double, double, int, int, Cookie*, int, unsigned int, int) + 1116
2   edit.dylib                    	0x000000010b8de8eb flatten_range(Lw::Ptr<Cel, Lw::DtorTraits, Lw::InternalRefCountTraits>, double, double, int, int, unsigned int, int) + 303
3   edit.dylib                    	0x000000010b8de785 flatten(Lw::Ptr<Cel, Lw::DtorTraits, Lw::InternalRefCountTraits>, unsigned int, int) + 114
4   edit.dylib                    	0x000000010b8fdf10 Edit::listChanReferences(int, bool, bool, bool) + 260
5   edit.dylib                    	0x000000010b8fdd57 Edit::listAllReferences(bool, bool, bool) + 201
6   editpanels.dylib              	0x000000010ba72c3b MediaMenuItems::makeMenuItem(EditPtr const&) + 71
7   editpanels.dylib              	0x000000010ba67693 EditMenuItems::getItemsFor(Lw::Ptr<Vob, Lw::DtorTraits, Lw::InternalRefCountTraits>) + 14243
8   gall.dylib                    	0x000000010c36341b TilesView::getCurrentLogMenuItems(Event*) const + 669
9   gall.dylib                    	0x000000010c363691 non-virtual thunk to TilesView::getCurrentLogMenuItems(Event*) const + 21
10  gall.dylib                    	0x000000010c31a7b9 Gallery::reviewMenu(Event*) + 937
11  atoms.dylib                   	0x0000000109b0a389 MenuGlob::makeMenu(Event*, bool) + 425
12  atoms.dylib                   	0x0000000109b0a55b MenuGlob::processRightMouseClicks(Event*) + 283
13  gall.dylib                    	0x000000010c36b45d TilesView::onMouseEvent(TileView*, Event*) + 657
14  players.dylib                 	0x000000010d35669f TileView::onMouseEvent(Event*) + 225
15  players.dylib                 	0x000000010d388fd0 EditView::editview_react(Event*) + 1084
16  players.dylib                 	0x000000010d354536 TileView::react1(Event*) + 1118
17  players.dylib                 	0x000000010d3540c0 TileView::react(Event*) + 18
18  glob.dylib                    	0x000000010c5589e1 Glob::handleEvent(Event*) + 107
19  glob.dylib                    	0x000000010c558953 Glob::dispatch(Event*) + 363
20  com.editshare.lightworks      	0x0000000108f7e15c processEvent(Event*) + 427
21  com.editshare.lightworks      	0x0000000108f7e317 mainEventHandler() + 65
22  glib.dylib                    	0x000000010c4e3eea RootWindowEventHandler::handleEvent(UserEvent const&) + 38
23  MacOS.dylib                   	0x000000010ccfb513 QtRootWindowWidget::event(QEvent*) + 51
24  org.qt-project.QtWidgets      	0x000000010e996ddb QApplicationPrivate::notify_helper(QObject*, QEvent*) + 251
25  org.qt-project.QtWidgets      	0x000000010e99a0f8 QApplication::notify(QObject*, QEvent*) + 8136
26  org.qt-project.QtCore         	0x000000011020ea7b QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 971
...


Things I have tried, but that have not worked:
- Move all elements from the sequence into a new bin (which created "Sequence #3 (section)", but right-clicking on that also crashes Lightworks)
- Create a backup of the project and then import it
- Restart the computer

Needless to say, this is quite frustrating. The work of an entire day seems to be lost. A previous similar report (www.lwks.com/index.php?option=com_kunena&func=view&catid=14&id=151733&Itemid=81) seems to be an open issue still.
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Re: Crash when right-clicking on sequence or in timeline 4 months, 1 week ago #158499

  • Great White
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  • 4 months, 1 week ago
I can almost certainly fix this if I have a project that exhibits the problem - I asked in the other thread, but to no avail. If you could follow the steps I outlined, I'll take a look right away.
Lightworks Development

Re: Crash when right-clicking on sequence or in timeline 4 months, 1 week ago #158547

  • fschopp
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I'm happy to zip the project directory and share it with you. Is there an easy way to do this non-publicly though? I also sent you a private message regarding this. We can later always share the results in this thread.

If sharing the project non-publicly is not possible, I'll try to clean the project somewhat before sharing it here, though that may take a day or two.

Re: Crash when right-clicking on sequence or in timeline 4 months, 1 week ago #158548

  • Great White
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I've replied to your message
Lightworks Development

Re: Crash when right-clicking on sequence or in timeline 4 months, 1 week ago #158550

  • fschopp
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I shared the project with you as per your instructions.

Re: Crash when right-clicking on sequence or in timeline 4 months, 1 week ago #158641

  • Great White
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Received, thank you. The good news is that the crash no longer occurs in 14.1, but it's not entirely clear why. I'll keep digging.
Lightworks Development

Re: Crash when right-clicking on sequence or in timeline 4 months, 1 week ago #158647

  • Great White
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Your sequences ('Sequence #3' and 'Sequence #3 (section)') appeared to have an overlapping segment on the last two audio tracks at around 00:00:40:00 - this is not supposed to happen, so any information you can provide regarding the history of those sequences might be useful (since obviously I'd like to ensure that this kind of thing can't happen again).

I've attached fixed versions of the offending sequences (and added code to 14.1 that will rectify any similarly afflicted sequences that it encounters).

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Lightworks Development

Re: Crash when right-clicking on sequence or in timeline 4 months, 1 week ago #158813

  • fschopp
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Thanks, good to hear it doesn't happen any more in 14.1.

As for the root cause: I don't think I did anything unusual, from my recollection this is the general outline of what I did over several hours:
- I first created a multicamera bin, added several clips to it, and manually set the timestamps in order to synchronize the clips (side remark: strangely, after changing the timecode of a clip in a multicamera bin, even though "Sync track (for sequences/syncs)" is already set to "V1" I need to click on "V1" again in order to correctly synchronize the clip with the others).
- I have three video tracks throughout the sequence, transitions between clips, and minor effects (mostly text overlays).
- I inserted "video black" into the sequence to have space to move things around, created cuts at different places, set in- and out-markers at the cuts, and then drag-and-dropped the pieces around (non-linearly, i.e., the timestamps were no longer increasing throughout the sequence).
- At some point I exported the video as YouTube 1080p. Shortly after, Lightworks crashed the first time while I right-clicked on a cut in the timeline.
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