ASSERT INFO:
./src/common/strconv.cpp(1165): assert ""Assert failure"" failed in FromWChar(): trying to encode undefined Unicode character

BACKTRACE:
[1] wxMBConvStrictUTF8::FromWChar(char*, unsigned long, wchar_t const*, unsigned long) const
[2] wxString::AsChar(wxMBConv const&) const
[3] wxCairoContext::GetTextExtent(wxString const&, double*, double*, double*, double*) const
[4] wxGCDCImpl::DoGetTextExtent(wxString const&, int*, int*, int*, int*, wxFont const*) const
[5] wxDCImpl::GetMultiLineTextExtent(wxString const&, int*, int*, int*, wxFont const*) const
[6] wxGridCellStringRenderer::DoGetBestSize(wxGridCellAttr const&, wxDC&, wxString const&)
[7] wxGridCellStringRenderer::GetBestSize(wxGrid&, wxGridCellAttr&, wxDC&, int, int)
[8] wxGridCellStringRenderer::Draw(wxGrid&, wxGridCellAttr&, wxDC&, wxRect const&, int, int, bool)
[9] wxGrid::DrawCell(wxDC&, wxGridCellCoords const&)
[10] wxGrid::DrawGridCellArea(wxDC&, wxGridCellCoordsArray const&)
[11] wxGridWindow::OnPaint(wxPaintEvent&)
[12] wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&)
[13] wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*)
[14] wxEvtHandler::TryHereOnly(wxEvent&)
[15] wxEvtHandler::ProcessEventLocally(wxEvent&)
[16] wxEvtHandler::ProcessEvent(wxEvent&)
[17] wxEvtHandler::SafelyProcessEvent(wxEvent&)
[18] wxWindow::GTKSendPaintEvents(_cairo*)
[19] g_closure_invoke
[20] g_signal_emit_valist
[21] g_signal_emit
[22] gtk_container_propagate_draw
[23] g_closure_invoke
[24] g_signal_emit_valist
[25] g_signal_emit
[26] gtk_container_propagate_draw
[27] g_closure_invoke
[28] g_signal_emit_valist
[29] g_signal_emit
[30] gtk_container_propagate_draw
[31] g_closure_invoke
[32] g_signal_emit_valist
[33] g_signal_emit
[34] gtk_container_propagate_draw
[35] gtk_container_propagate_draw
[36] gtk_main_do_event
[37] g_signal_emit_valist
[38] g_signal_emit
[39] g_main_context_dispatch
[40] g_main_loop_run
[41] gtk_main
[42] wxGUIEventLoop::DoRun()
[43] wxEventLoopBase::Run()
[44] wxDialog::ShowModal()
[45] Tags::ShowEditDialog(wxWindow*, TranslatableString const&, bool)
[46] Exporter::DoEditMetadata(AudacityProject&, TranslatableString const&, TranslatableString const&, bool)
[47] EditActions::Handler::OnEditMetadata(CommandContext const&)
[48] CommandManager::HandleCommandEntry(AudacityProject&, CommandListEntry const*, std::bitset<64ul>, bool, wxEvent const*, CommandContext const*)
[49] CommandManager::HandleMenuID(AudacityProject&, int, std::bitset<64ul>, bool)
[50] ProjectWindow::OnMenu(wxCommandEvent&)
[51] wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&)
[52] wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*)
[53] wxEvtHandler::TryHereOnly(wxEvent&)
[54] wxEvtHandler::DoTryChain(wxEvent&)
[55] wxEvtHandler::ProcessEvent(wxEvent&)
[56] wxWindowBase::TryAfter(wxEvent&)
[57] wxEvtHandler::SafelyProcessEvent(wxEvent&)
[58] wxMenuBase::DoProcessEvent(wxMenuBase*, wxEvent&, wxWindow*)
[59] wxMenuBase::SendEvent(int, int)
[60] g_closure_invoke
[61] g_signal_emit_valist
[62] g_signal_emit
[63] gtk_widget_activate
[64] gtk_menu_shell_activate_item
[65] g_signal_emit_valist
[66] g_signal_emit
[67] gtk_main_do_event
[68] g_main_context_dispatch
[69] g_main_loop_run
[70] gtk_main
[71] wxGUIEventLoop::DoRun()
[72] wxEventLoopBase::Run()
[73] wxAppConsoleBase::MainLoop()
[74] AudacityApp::OnRun()
[75] wxEntry(int&, wchar_t**)
[76] main
[77] __libc_start_main
[78] _start