ERROR:extension/internal/cairo-render-context.cpp:898:void Inkscape::Extension::Internal::CairoRenderContext::setTransform(const Geom::Matrix*): assertion failed: (_is_valid)

Program received signal SIGABRT, Aborted.
0xb7fe2422 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7fe2422 in __kernel_vsyscall ()
#1  0xb673f4d1 in raise () from /lib/tls/i686/cmov/libc.so.6
#2  0xb6742932 in abort () from /lib/tls/i686/cmov/libc.so.6
#3  0xb720adec in g_assertion_message () from /lib/libglib-2.0.so.0
#4  0xb720b44d in g_assertion_message_expr () from /lib/libglib-2.0.so.0
#5  0x08210974 in Inkscape::Extension::Internal::CairoRenderContext::setTransform (this=0xd4bf3c0, transform=0xd286f5c) at extension/internal/cairo-render-context.cpp:898
#6  0x08212b66 in Inkscape::Extension::Internal::CairoRenderContext::popLayer (this=0xd9abf70) at extension/internal/cairo-render-context.cpp:679
#7  0x082155bc in Inkscape::Extension::Internal::CairoRenderer::renderItem (this=0xcb78250, ctx=0xd9abf70, item=0x9f412e0) at extension/internal/cairo-renderer.cpp:587
#8  0x08215846 in sp_group_render (item=<value optimized out>, ctx=0xd9abf70) at extension/internal/cairo-renderer.cpp:297
#9  0x08215241 in sp_item_invoke_render (item=0xc11c008, ctx=0xd9abf70) at extension/internal/cairo-renderer.cpp:524
#10 0x082155af in Inkscape::Extension::Internal::CairoRenderer::renderItem (this=0xcb78250, ctx=0xd9abf70, item=0xc11c008) at extension/internal/cairo-renderer.cpp:584
#11 0x082117cf in Inkscape::Extension::Internal::CairoRenderContext::_createPatternPainter (this=0xdfa4680, paintserver=0x9796390, pbox=0xbfffd9f0)
    at extension/internal/cairo-render-context.cpp:1069
#12 0x082120fe in Inkscape::Extension::Internal::CairoRenderContext::_createPatternForPaintServer (this=0xdfa4680, paintserver=0x9796390, pbox=0xbfffd9f0, alpha=1)
    at extension/internal/cairo-render-context.cpp:1161
#13 0x08212480 in Inkscape::Extension::Internal::CairoRenderContext::_setFillStyle (this=0xdfa4680, style=0xc1262c8, pbox=0xbfffd9f0)
    at extension/internal/cairo-render-context.cpp:1241
#14 0x08213151 in Inkscape::Extension::Internal::CairoRenderContext::renderPathVector (this=0xdfa4680, pathv=..., style=0xc1262c8, pbox=0xbfffd9f0)
    at extension/internal/cairo-render-context.cpp:1354
#15 0x08214480 in sp_shape_render (item=<value optimized out>, ctx=<value optimized out>) at extension/internal/cairo-renderer.cpp:194
#16 0x08215251 in sp_item_invoke_render (item=0xc08ea38, ctx=0xdfa4680) at extension/internal/cairo-renderer.cpp:527
#17 0x082155af in Inkscape::Extension::Internal::CairoRenderer::renderItem (this=0xcb78250, ctx=0xdfa4680, item=0xc08ea38) at extension/internal/cairo-renderer.cpp:584
#18 0x08215846 in sp_group_render (item=<value optimized out>, ctx=0xdfa4680) at extension/internal/cairo-renderer.cpp:297
#19 0x08215241 in sp_item_invoke_render (item=0xc11c368, ctx=0xdfa4680) at extension/internal/cairo-renderer.cpp:524
#20 0x082155af in Inkscape::Extension::Internal::CairoRenderer::renderItem (this=0xcb78250, ctx=0xdfa4680, item=0xc11c368) at extension/internal/cairo-renderer.cpp:584
#21 0x08215846 in sp_group_render (item=<value optimized out>, ctx=0xdfa4680) at extension/internal/cairo-renderer.cpp:297
#22 0x08215241 in sp_item_invoke_render (item=0xc11c248, ctx=0xdfa4680) at extension/internal/cairo-renderer.cpp:524
#23 0x082155af in Inkscape::Extension::Internal::CairoRenderer::renderItem (this=0xcb78250, ctx=0xdfa4680, item=0xc11c248) at extension/internal/cairo-renderer.cpp:584
#24 0x08215846 in sp_group_render (item=<value optimized out>, ctx=0xdfa4680) at extension/internal/cairo-renderer.cpp:297
#25 0x08215241 in sp_item_invoke_render (item=0xc11c128, ctx=0xdfa4680) at extension/internal/cairo-renderer.cpp:524
#26 0x082155af in Inkscape::Extension::Internal::CairoRenderer::renderItem (this=0xcb78250, ctx=0xdfa4680, item=0xc11c128) at extension/internal/cairo-renderer.cpp:584
#27 0x082156c1 in Inkscape::Extension::Internal::CairoRenderer::applyMask (this=0xcb78250, ctx=0xdfa4680, mask=0xb31f348) at extension/internal/cairo-renderer.cpp:727
#28 0x08212b82 in Inkscape::Extension::Internal::CairoRenderContext::popLayer (this=0xce838c0) at extension/internal/cairo-render-context.cpp:682
#29 0x082155bc in Inkscape::Extension::Internal::CairoRenderer::renderItem (this=0xcb78250, ctx=0xce838c0, item=0xc11c488) at extension/internal/cairo-renderer.cpp:587
#30 0x08215846 in sp_group_render (item=<value optimized out>, ctx=0xce838c0) at extension/internal/cairo-renderer.cpp:297
#31 0x08215241 in sp_item_invoke_render (item=0xa1a0d90, ctx=0xce838c0) at extension/internal/cairo-renderer.cpp:524
#32 0x082155af in Inkscape::Extension::Internal::CairoRenderer::renderItem (this=0xcb78250, ctx=0xce838c0, item=0xa1a0d90) at extension/internal/cairo-renderer.cpp:584
#33 0x08215846 in sp_group_render (item=<value optimized out>, ctx=0xce838c0) at extension/internal/cairo-renderer.cpp:297
#34 0x08215241 in sp_item_invoke_render (item=0xa1a0b50, ctx=0xce838c0) at extension/internal/cairo-renderer.cpp:524
#35 0x082155af in Inkscape::Extension::Internal::CairoRenderer::renderItem (this=0xcb78250, ctx=0xce838c0, item=0xa1a0b50) at extension/internal/cairo-renderer.cpp:584
#36 0x08215846 in sp_group_render (item=<value optimized out>, ctx=0xce838c0) at extension/internal/cairo-renderer.cpp:297
#37 0x08215241 in sp_item_invoke_render (item=0xa1a0c70, ctx=0xce838c0) at extension/internal/cairo-renderer.cpp:524
#38 0x082155af in Inkscape::Extension::Internal::CairoRenderer::renderItem (this=0xcb78250, ctx=0xce838c0, item=0xa1a0c70) at extension/internal/cairo-renderer.cpp:584
#39 0x08215846 in sp_group_render (item=<value optimized out>, ctx=0xce838c0) at extension/internal/cairo-renderer.cpp:297
#40 0x08215227 in sp_symbol_render (item=0x922d5b8, ctx=0xce838c0) at extension/internal/cairo-renderer.cpp:410
#41 sp_item_invoke_render (item=0x922d5b8, ctx=0xce838c0) at extension/internal/cairo-renderer.cpp:534
#42 0x082155af in Inkscape::Extension::Internal::CairoRenderer::renderItem (this=0xcb78250, ctx=0xce838c0, item=0x922d5b8) at extension/internal/cairo-renderer.cpp:584
#43 0x082161b0 in pdf_render_document_to_file (this=0x8b13298, mod=0x8b133d0, doc=0x8e8be40, filename=0xdb2d2e0 "/home/tomek/Dropbox/Dokumenty/festiwal.g.pdf")
    at extension/internal/cairo-renderer-pdf-out.cpp:94
#44 Inkscape::Extension::Internal::CairoRendererPdfOutput::save (this=0x8b13298, mod=0x8b133d0, doc=0x8e8be40, filename=0xdb2d2e0 "/home/tomek/Dropbox/Dokumenty/festiwal.g.pdf")
    at extension/internal/cairo-renderer-pdf-out.cpp:193
#45 0x08201d77 in Inkscape::Extension::Output::save (this=0x8b133d0, doc=0x8e8be40, filename=0xdb2d2e0 "/home/tomek/Dropbox/Dokumenty/festiwal.g.pdf") at extension/output.cpp:218
#46 0x08200090 in Inkscape::Extension::save (key=0x8b133d0, doc=0x8e8be40, filename=0xcda3474 "/home/tomek/Dropbox/Dokumenty/festiwal.g.pdf", setextension=false, 
    check_overwrite=true, official=true, save_method=Inkscape::Extension::FILE_SAVE_METHOD_SAVE_AS) at extension/system.cpp:293
#47 0x08099c1b in file_save (parentWindow=<value optimized out>, doc=0x8e8be40, uri=..., key=0x8b133d0, checkoverwrite=true, official=true, 
    save_method=Inkscape::Extension::FILE_SAVE_METHOD_SAVE_AS) at file.cpp:602
#48 0x08099620 in sp_file_save_dialog (parentWindow=..., doc=0x8e8be40, save_method=Inkscape::Extension::FILE_SAVE_METHOD_SAVE_AS) at file.cpp:840
#49 0x08243c0d in sp_action_perform (action=0x8e91e00, data=0x0) at helper/action.cpp:181
#50 0x080cf5c8 in sp_shortcut_invoke (shortcut=50331731, view=0x8eacdb0) at shortcuts.cpp:55
#51 0x0824a477 in on_window_key_press (event=0xb02cb88) at helper/window.cpp:34
#52 0xb7ee1222 in ?? () from /usr/lib/libgtkmm-2.4.so.1
---Type <return> to continue, or q <return> to quit---
#53 0xb7862474 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#54 0xb7464072 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#55 0xb7479d66 in ?? () from /usr/lib/libgobject-2.0.so.0
#56 0xb747a9b8 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#57 0xb747afb6 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#58 0xb797e95e in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#59 0xb785aceb in gtk_propagate_event () from /usr/lib/libgtk-x11-2.0.so.0
#60 0xb785bea9 in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
#61 0xb76e565a in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#62 0xb71e3e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#63 0xb71e7730 in ?? () from /lib/libglib-2.0.so.0
#64 0xb71e7b9f in g_main_loop_run () from /lib/libglib-2.0.so.0
#65 0xb785c419 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#66 0xb7e5c5e7 in Gtk::Main::run_impl() () from /usr/lib/libgtkmm-2.4.so.1
#67 0xb7e5c3e2 in Gtk::Main::run() () from /usr/lib/libgtkmm-2.4.so.1
#68 0x08088b8b in sp_main_gui (argc=1, argv=0xbffff4e4) at main.cpp:953
#69 0x0816967a in Inkscape::NSApplication::Application::run (this=0xbffff408) at application/application.cpp:114
#70 0x08087ff2 in main (argc=1, argv=0xbffff4e4) at main.cpp:689
(gdb)