Crash when using LPE with node tool selected

confirmed on Win32 build 20316, exit message is :

C:\Python25\APP>inkcl.py
return code: -1073741819
WARNING: Requested update while update in progress, counter = 1
WARNING: Requested update while update in progress, counter = 1

Confirmed on Ubuntu 8.10, build 20846.

#0 sp_nodepath_update_helperpaths (np=0xba32890) at nodepath.cpp:228
#1 sp_group_update (object=0xaa6a010, ctx=0xbff7ffe4, flags=2) at sp-item-group.cpp:208
#2 sp_root_update (object=0xaa6a010, ctx=0xbff80218, flags=2) at sp-root.cpp:551
#3 SPObject::updateDisplay (this=0xaa6a010, ctx=0xbff80218, flags=2) at sp-object.cpp:1301
#4 SPDocument::_updateDocument (this=0xa61bf60) at document.cpp:862
#5 sp_document_ensure_up_to_date (doc=0xa61bf60) at document.cpp:884
#6 sp_document_maybe_done (doc=0xa61bf60, key=0x0, event_type=201, event_description=) at document-undo.cpp:179
#7 sp_document_done (doc=0xa61bf60, event_type=201, event_description=) at document-undo.cpp:125
#8 Inkscape::UI::Dialog::LivePathEffectEditor::onApply (this=0xca5e000) at ui/dialog/livepatheffect-editor.cpp:373
#9 Glib::SignalProxyNormal::slot0_void_callback () at :0

Still have this bug with rev 21303 on Windows XP.
Now, it also crashes with Bend or Stitch sub-path alone, with node tool selected (works well with 0.46).
At least this last part should be fixed before 0.47 is released.

I am seeing the same thing... applying Stitch path to a simple four node path.

#0 0x08532f28 in sp_nodepath_update_helperpaths (np=0xc13e2b0) at nodepath.cpp:225
#1 0x080f5361 in sp_group_update (object=0x923e000, ctx=0xbfa88e34, flags=2) at sp-item-group.cpp:208
#2 0x0811645f in sp_root_update (object=0x923e000, ctx=0xbfa89068, flags=2) at sp-root.cpp:551
#3 0x08105066 in SPObject::updateDisplay (this=0x923e000, ctx=0xbfa89068, flags=2) at sp-object.cpp:1310
#4 0x08089081 in SPDocument::_updateDocument (this=0x8d91f60) at document.cpp:892
#5 0x080890c7 in sp_document_ensure_up_to_date (doc=0x8d91f60) at document.cpp:914
#6 0x0808de29 in sp_document_maybe_done (doc=0x8d91f60, key=0x0, event_type=201, event_description=
          {static npos = 4294967295, string_ = {static npos = 4294967295, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0xbfa891dc "ܩ"}}})
    at document-undo.cpp:179
#7 0x0808e34c in sp_document_done (doc=0x8d91f60, event_type=201, event_description=
          {static npos = 4294967295, string_ = {static npos = 4294967295, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0xbfa89238 "ܩ"}}})
    at document-undo.cpp:125
#8 0x0840f995 in Inkscape::UI::Dialog::LivePathEffectEditor::onApply (this=0xc17d260)
    at ui/dialog/livepatheffect-editor.cpp:374
#9 0x00d00392 in Glib::SignalProxyNormal::slot0_void_callback () from /usr/lib/libglibmm-2.4.so.1
#10 0x001918a4 in g_cclosure_marshal_VOID__VOID () from /lib/libgobject-2.0.so.0
#11 0x0018411b in g_closure_invoke () from /lib/libgobject-2.0.so.0
#12 0x00198ec8 in ?? () from /lib/libgobject-2.0.so.0

Tested again with a simple rectangle on Windows XP, rev. 21627. The affected LPEs are:
* bend
* interpolate sub-path
* knot
* stitch sub-path

Some effects (Von Koch, envelope, hatches) crash when you undo/redo or when they are combined with another LPE.
The others don't crash at all.

Not reproduced with 0.46.

confirmed with vonkoch + stitch subpaths

fixed in 22074, please test

Fix confirmed on Ubuntu 9.04.
Thanks Bulia!