loading projects from 0.8.1 doesn't work, sometimes crashes

[qgib]

Author Name: Maciej Sieczka - (Maciej Sieczka -)
Original Redmine Issue: 755

Redmine category:project_loading/saving
Assignee: Magnus Homann

---

My projects created in QGIS 0.8.1 open in QGIS 0.9 SVN 7174, but no layers are visible. Zooming to a layer or to a full extent, turning rendering on/off doesn't help. Also, the projection is always reset to EPSG 4326, no matter what it was set to in QGIS 0.8.1 (ususally EPSG 32633 in my case). At random occasions, QGIS 0.9 even crashes loading 0.8.1 projects. Example backtrace follows:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 46912606875408 (LWP 22651)]
0x00000000004d097a in QListData::size ()
(gdb) bt
#_0  0x00000000004d097a in QListData::size ()
#_3905  0x0000000000516df9 in QList<QTreeWidgetItem*>::count ()
#_3906  0x0000000000516e15 in QTreeWidgetItem::childCount ()
#_3907  0x00000000005e5046 in [[QgsLegend]]::nextItem ()
#_3908  0x00000000005e93bc in [[QgsLegend]]::updateMapCanvasLayerSet ()
#_3909  0x00000000005eb505 in [[QgsLegend]]::handleItemChange ()
#_3910  0x0000000000622aa8 in [[QgsLegend]]::qt_metacall ()
#_3911  0x00002aaaaacd54db in QMetaObject::activate (sender=0xc25990,
    from_signal_index=95, to_signal_index=95, argv=0x0)
    at kernel/qobject.cpp:3080
#_3912  0x00002aaaab6aff50 in QTreeWidget::itemChanged (this=0x30, _t1=0xce56e0,
    _t2=0) at moc_qtreewidget.cpp:225
#_3913  0x00002aaaab6b9f8e in QTreeWidget::qt_metacall (this=0xc25990,
    _c=QMetaObject::InvokeMetaMethod, _id=-7, _a=0x7fffffcbe570)
    at moc_qtreewidget.cpp:145
#_10 0x000000000062282a in [[QgsLegend]]::qt_metacall ()
#_3914 0x00002aaaaacd54db in QMetaObject::activate (sender=0xc29490,
    from_signal_index=4, to_signal_index=4, argv=0x0)
    at kernel/qobject.cpp:3080
#_3915 0x00002aaaaacf2627 in QAbstractItemModel::dataChanged (this=0x30,
    _t1=<value optimized out>, _t2=<value optimized out>)
    at .moc/release-shared/moc_qabstractitemmodel.cpp:123
#_3916 0x00002aaaab6b0498 in QTreeModel::itemChanged (this=0xc29490,
    item=0xce56e0) at itemviews/qtreewidget.cpp:726
#_3917 0x00002aaaab6b3dfb in QTreeWidgetItemPrivate::propagateDisabled (
    this=<value optimized out>, item=0xce56e0)
    at itemviews/qtreewidget.cpp:1597
#_3918 0x00002aaaab6b633a in QTreeWidgetItem::insertChild (this=0x1a3dde0,
    index=0, child=0xce56e0) at itemviews/qtreewidget.cpp:1862
#_3919 0x00002aaaab6b6c46 in QTreeWidgetItem (this=0xce56e0, parent=0x1a3dde0,
    type=<value optimized out>) at itemviews/qtreewidget.cpp:1382
#_3920 0x00000000005f70c3 in [[QgsLegendItem]]::QgsLegendItem ()
#_3921 0x00000000005fea8b in [[QgsLegendLayerFileGroup]]::QgsLegendLayerFileGroup ()
#_3922 0x00000000005ed8a1 in [[QgsLegend]]::readXML ()
#_3923 0x00000000005ee003 in [[QgsLegend]]::readProject ()
#_3924 0x00000000006229c1 in [[QgsLegend]]::qt_metacall ()
#_3925 0x00002aaaaacd54db in QMetaObject::activate (sender=0xa8cde0,
    from_signal_index=4, to_signal_index=4, argv=0x0)
    at kernel/qobject.cpp:3080
#_3926 0x00002aaaac7c93a7 in [[QgsProject]]::readProject ()
   from /usr/local/qgis09/lib/libqgis_core.so
#_3927 0x00002aaaac764fa4 in [[QgsProject]]::read ()
   from /usr/local/qgis09/lib/libqgis_core.so
#_3928 0x00002aaaac7651d5 in [[QgsProject]]::read ()
   from /usr/local/qgis09/lib/libqgis_core.so
#_3929 0x00000000004ca9c7 in [[QgisApp]]::addProject ()
#_3930 0x00000000004cb560 in [[QgisApp]]::openProject ()
#_3931 0x000000000061cd7b in [[QgisApp]]::qt_metacall ()
#_3932 0x00002aaaaacd54db in QMetaObject::activate (sender=0xa4c090,
    from_signal_index=29, to_signal_index=29, argv=0x0)
    at kernel/qobject.cpp:3080
#_3933 0x00002aaaab580d12 in QMenu::triggered (this=0x30, _t1=0xa807b0)
    at moc_qmenu.cpp:155
#_3934 0x00002aaaab58196c in QMenuPrivate::_q_actionTriggered (
    this=<value optimized out>) at widgets/qmenu.cpp:969
#_3935 0x00002aaaab586e3b in QMenu::qt_metacall (this=0xa4c090,
    _c=QMetaObject::InvokeMetaMethod, _id=-3, _a=0x7fffffcc0630)
    at moc_qmenu.cpp:97
#_3936 0x00002aaaaacd54db in QMetaObject::activate (sender=0xa807b0,
    from_signal_index=5, to_signal_index=6, argv=0x0)
    at kernel/qobject.cpp:3080
#_3937 0x00002aaaab22a077 in QAction::triggered (this=0x30, _t1=false)
    at moc_qaction.cpp:208
#_3938 0x00002aaaab22a90b in QAction::activate (this=0xa807b0,
    event=<value optimized out>) at kernel/qaction.cpp:1116
#_36 0x00002aaaab588455 in QMenuPrivate::activateAction (this=0xa3c960,
    action=0xa807b0, action_e=QAction::Trigger, self=true)
    at widgets/qmenu.cpp:912
#_37 0x00002aaaab2738fa in QWidget::event (this=0x30, event=0x7fffffcc0f40)
    at kernel/qwidget.cpp:6080
#_38 0x00002aaaab586591 in QMenu::event (this=0xa4c090, e=0x7fffffcc0f40)
    at widgets/qmenu.cpp:2134
#_39 0x00002aaaab23012f in QApplicationPrivate::notify_helper (this=0x0,
    receiver=0xa4c090, e=0x7fffffcc0f40) at kernel/qapplication.cpp:3558
#_40 0x00002aaaab233d88 in QApplication::notify (this=<value optimized out>,
    receiver=0xa4c090, e=0x7fffffcc0f40) at kernel/qapplication.cpp:3257
#_41 0x00002aaaaacc4440 in QCoreApplication::notifyInternal (
    this=0x7fffffcc1a70, receiver=0xa4c090, event=0x7fffffcc0f40)
    at kernel/qcoreapplication.cpp:532
#_42 0x00002aaaab289e65 in QETWidget::translateMouseEvent (this=0xa4c090,
    event=<value optimized out>) at qcoreapplication.h:205
#_43 0x00002aaaab28837c in QApplication::x11ProcessEvent (this=0x7b,
    event=0x7fffffcc1530) at kernel/qapplication_x11.cpp:3024
#_44 0x00002aaaab2ac9c2 in x11EventSourceDispatch (s=0x8145a0, callback=0,
    user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:137
#_45 0x00002aaaae6e4bfd in g_main_context_dispatch ()
   from /usr/lib64/libglib-2.0.so.0
#_46 0x00002aaaae6e7ec5 in g_main_context_check ()
   from /usr/lib64/libglib-2.0.so.0
#_47 0x00002aaaae6e8374 in g_main_context_iteration ()
   from /usr/lib64/libglib-2.0.so.0
#_48 0x00002aaaaace6cfe in QEventDispatcherGlib::processEvents (this=0x80fc40,
    flags=@0x7fffffcc1800) at kernel/qeventdispatcher_glib.cpp:340
#_49 0x00002aaaab2ac59f in QGuiEventDispatcherGlib::processEvents (this=0x30,
    flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:193
#_50 0x00002aaaaacc3da8 in QEventLoop::processEvents (
    this=<value optimized out>, flags=<value optimized out>)
    at kernel/qeventloop.cpp:141
#_51 0x00002aaaaacc3ef6 in QEventLoop::exec (this=0x7fffffcc18a0,
    flags=@0x7fffffcc18b0) at kernel/qeventloop.cpp:187
#_52 0x00002aaaaacc63f2 in QCoreApplication::exec ()
    at kernel/qcoreapplication.cpp:752
#_53 0x00000000004aa44e in main ()

[qgib]

Author Name: Maciej Sieczka - (Maciej Sieczka -)

---

And vice versa - projects created in 0.9 can't be used i 0.8.1.

[qgib]

Author Name: Magnus Homann (@homann)

---

Two main issues:

1. They layers are markes as being shown, but they are not. Uncheck and check the 'shown' box in legend.
2. The layer projection is wrong. Set all projection layers, and the project projection.

Opening a 0.9 project in 0.8 will not be supported.

---

• status_id was changed from Open to In Progress

[qgib]

Author Name: Magnus Homann (@homann)

---

The crash might be fixed by 74cacbb (SVN r7400), please update and try if it crashes. The reading of older project files is still work in progress.

[qgib]

Author Name: Magnus Homann (@homann)

---

Reading of older projectm files should be fixed in

---

• resolution was changed from to fixed
• status_id was changed from In Progress to Closed

[qgib]

Author Name: Anónimo (Anónimo)

---

Milestone Version 0.9.2 deleted