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[clepsdyrae <myopenid@xxxxxxxxxxxxxxx>]

Yeah, it works fine in Windows 8.1 for me, just not in linux.

I just tried it in a fresh install in a Kubuntu 16.10 VM... added the
nightlies repo, installed hugin, dismissed the help dialog, changed to
expert mode, added an image, made two masks, deleted the second, and got
the same issue.

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https://bugs.launchpad.net/bugs/1698048

Title:
  faile assertion when deleting mask

Status in Hugin:
  Fix Committed

Bug description:
  I'm getting a failed assertion dialog when trying to delete a mask
  when there is more than one mask.

  To recreate:
  * start hugin, add one image, go to masks tab
  * add an "exclude region from all images of this lens" mask
  * add a second mask
  * click "Delete mask"
  * failed assertion window appears

  If I select the first mask before clicking delete, it works.

  Fencepost error?

  ---------------

  This is latest nightly on Kubuntu 16.10: 2017.1.0.6a5ba6861da0
  libpano13: 2.9.19 
  Boost: 1.61.0
  Exiv2: 0.25
  SQLite3: 3.14.1
  Vigra: 1.11.0
  LittleCMS2: 2.7

  Let me know if you have trouble reproducing.

  Thanks!

  ---------------------

  Backtrace:

  ASSERT INFO:
  ../src/generic/listctrl.cpp(3386): assert "litem >= 0 && (size_t)litem < GetItemCount()" failed in SetItemState(): invalid list ctrl item index in SetItem

  BACKTRACE:
  [1] wxGenericListCtrl::SetItemState(long, long, long)
  [2] MaskEditorPanel::panoramaImagesChanged(HuginBase::Panorama&, std::set<unsigned int, std::less<unsigned int>, std::allocator<unsigned int> > const&)
  [3] HuginBase::Panorama::changeFinished(bool)
  [4] PanoCommand::PanoCommand::execute()
  [5] PanoCommand::CommandHistory::addCommand(PanoCommand::PanoCommand*, bool)
  [6] MaskEditorPanel::OnMaskDelete(wxCommandEvent&)
  [7] wxAppConsoleBase::CallEventHandler(wxEvtHandler*, wxEventFunctor&, wxEvent&) const
  [8] wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&)
  [9] wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*)
  [10] wxEvtHandler::TryHereOnly(wxEvent&)
  [11] wxEvtHandler::ProcessEventLocally(wxEvent&)
  [12] wxEvtHandler::ProcessEvent(wxEvent&)
  [13] wxWindowBase::TryAfter(wxEvent&)
  [14] wxWindowBase::TryAfter(wxEvent&)
  [15] wxWindowBase::TryAfter(wxEvent&)
  [16] wxWindowBase::TryAfter(wxEvent&)
  [17] wxEvtHandler::SafelyProcessEvent(wxEvent&)
  [18] g_closure_invoke
  [19] g_signal_emit_valist
  [20] g_signal_emit
  [21] g_closure_invoke
  [22] g_signal_emit_valist
  [23] g_signal_emit
  [24] g_closure_invoke
  [25] g_signal_emit_valist
  [26] g_signal_emit
  [27] gtk_propagate_event
  [28] gtk_main_do_event
  [29] g_main_context_dispatch
  [30] g_main_loop_run
  [31] gtk_main
  [32] wxGUIEventLoop::DoRun()
  [33] wxEventLoopBase::Run()
  [34] wxAppConsoleBase::MainLoop()
  [35] wxEntry(int&, wchar_t**)
  [36] main
  [37] __libc_start_main
  [38] _start

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