Hi,
        this is the second crash I get under 1.5.x (both 2 and 3svn). I attach 
the 
bug report with the output of gdb. For 1.5.2 the file does not crash but 
freezes so the final result is the same. :-)

        This happens when loading a file converted by tex2lyx. What has changed 
in my 
system in the last week is that I am running Fedora 8.

-- 
José Abílio
Warning: #LyX file created by  tex2lyx 0.1.2

warning: Missing the separate debug info file: /usr/lib/debug/.build-id/b4/8fdd084f9abacb1e4369c7e2cba189e3507926.debug
[Detaching after fork from child process 22185.]
<unknown program name>(22136)/ EPSHandler::read: kimgio EPS: starting...
<unknown program name>(22136)/ seekToCodeStart: kimgio EPS: normal EPS file
<unknown program name>(22136)/ bbox: kimgio EPS BBOX:  0   0   428   302
Fatal error: you need to have a KComponentData object before
you do anything that requires it! Examples of this are config
objects, standard directories or translations.
ForkedProcess::kill(0)
*** glibc detected *** /home/jamatos/lyx/stable/lyx-1.5.x/src/lyx: double free or corruption (fasttop): 0x0a0ece50 ***
pplatex: Process input file 1lyxpreview.dvi
======= Backtrace: =========
/lib/libc.so.6[0x73dac1]
/lib/libc.so.6(cfree+0x90)[0x7410f0]
/usr/lib/libstdc++.so.6(_ZdlPv+0x21)[0xbf46f1]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x8998167]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x8997f2c]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x89474cd]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x894e60a]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x894e90e]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x8964987]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x8964dab]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x8964d82]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x8961cc6]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x8961cfc]
/lib/libc.so.6(exit+0xee)[0x70063e]
/usr/lib/libQtCore.so.4(_Z17qt_message_output9QtMsgTypePKc+0x9c)[0x6cdc43c]
/usr/lib/libQtCore.so.4(_Z6qFatalPKcz+0x68)[0x6cdc4f8]
/usr/lib/libkdecore.so.5(_ZN7KGlobal13mainComponentEv+0xb3)[0xec16a3]
/usr/lib/kde4/plugins/imageformats/kimg_eps.so[0x1f094c]
/usr/lib/libQtGui.so.4(_ZN12QImageReader4readEP6QImage+0x173)[0x6fd6003]
/usr/lib/libQtGui.so.4(_ZN12QImageReader4readEv+0x37)[0x6fd65c7]
/usr/lib/libQtGui.so.4(_ZN6QImage4loadERK7QStringPKc+0x6b)[0x6fca80b]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x886f647]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x893044d]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x8930966]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x8930f88]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x8930fcb]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x893bd6e]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x893d932]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x80b13d3]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x80cc944]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x8697983]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x86ea0c0]
/usr/lib/libQtCore.so.4(_ZN7QObject5eventEP6QEvent+0x115)[0x6d94745]
/usr/lib/libQtGui.so.4(_ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent+0x180)[0x6f47ac0]
/usr/lib/libQtGui.so.4(_ZN12QApplication6notifyEP7QObjectP6QEvent+0xa9)[0x6f4da09]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x86f0548]
/usr/lib/libQtCore.so.4(_ZN16QCoreApplication14notifyInternalEP7QObjectP6QEvent+0x6b)[0x6d8675b]
/usr/lib/libQtCore.so.4[0x6da9fdd]
/usr/lib/libQtCore.so.4[0x6da7740]
/lib/libglib-2.0.so.0(g_main_context_dispatch+0x17c)[0x4cb05c]
/lib/libglib-2.0.so.0[0x4ce49f]
/lib/libglib-2.0.so.0(g_main_context_iteration+0x65)[0x4cea05]
/usr/lib/libQtCore.so.4(_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE+0x58)[0x6da7ca8]
/usr/lib/libQtGui.so.4[0x6fc0fe5]
/usr/lib/libQtCore.so.4(_ZN10QEventLoop13processEventsE6QFlagsINS_17ProcessEventsFlagEE+0x31)[0x6d85c81]
/usr/lib/libQtCore.so.4(_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE+0x7c)[0x6d85d8c]
/usr/lib/libQtCore.so.4(_ZN16QCoreApplication4execEv+0xaa)[0x6d8813a]
/usr/lib/libQtGui.so.4(_ZN12QApplication4execEv+0x27)[0x6f470c7]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x86ef572]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx[0x82d0264]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx(_ZN9QListView10paintEventEP11QPaintEvent+0x51e)[0x80694be]
/lib/libc.so.6(__libc_start_main+0xe0)[0x6ea390]
/home/jamatos/lyx/stable/lyx-1.5.x/src/lyx(_ZN11QListWidget9dropEventEP10QDropEvent+0x2d1)[0x8069331]
======= Memory map: ========
00110000-00111000 r-xp 00110000 00:00 0          [vdso]
00111000-00128000 r-xp 00000000 fd:00 17467093   /usr/lib/libaudio.so.2.4
00128000-00129000 rwxp 00016000 fd:00 17467093   /usr/lib/libaudio.so.2.4
00129000-00133000 r-xp 00000000 fd:00 2327171    /lib/libnss_files-2.7.so
00133000-00134000 r-xp 00009000 fd:00 2327171    /lib/libnss_files-2.7.so
00134000-00135000 rwxp 0000a000 fd:00 2327171    /lib/libnss_files-2.7.so
00135000-00137000 r-xp 00000000 fd:00 17545332   /usr/lib/gconv/UTF-16.so
00137000-00138000 r-xp 00001000 fd:00 17545332   /usr/lib/gconv/UTF-16.so
00138000-00139000 rwxp 00002000 fd:00 17545332   /usr/lib/gconv/UTF-16.so
00139000-0013e000 r-xp 00000000 fd:00 164032     /usr/lib/qt4/plugins/imageformats/libqgif.so
0013e000-0013f000 rwxp 00004000 fd:00 164032     /usr/lib/qt4/plugins/imageformats/libqgif.so
0013f000-00147000 r-xp 00000000 fd:00 164036     /usr/lib/qt4/plugins/imageformats/libqjpeg.so
00147000-00148000 rwxp 00007000 fd:00 164036     /usr/lib/qt4/plugins/imageformats/libqjpeg.so
00148000-00169000 r-xp 00000000 fd:00 17472861   /usr/lib/libjpeg.so.62.0.0
00169000-0016a000 rwxp 00020000 fd:00 17472861   /usr/lib/libjpeg.so.62.0.0
0016a000-0016f000 r-xp 00000000 fd:00 164041     /usr/lib/qt4/plugins/imageformats/libqmng.so
0016f000-00170000 rwxp 00004000 fd:00 164041     /usr/lib/qt4/plugins/imageformats/libqmng.so
00170000-001d8000 r-xp 00000000 fd:00 17472865   /usr/lib/libmng.so.1.0.0
001d8000-001db000 rwxp 00067000 fd:00 17472865   /usr/lib/libmng.so.1.0.0
001db000-001de000 r-xp 00000000 fd:00 164043     /usr/lib/qt4/plugins/imageformats/libqsvg.so
001de000-001df000 rwxp 00002000 fd:00 164043     /usr/lib/qt4/plugins/imageformats/libqsvg.so
001df000-001e3000 r-xp 00000000 fd:00 164048     /usr/lib/qt4/plugins/imageformats/libqtiff.so
001e3000-001e4000 rwxp 00003000 fd:00 164048     /usr/lib/qt4/plugins/imageformats/libqtiff.so
001e4000-001eb000 r-xp 00000000 fd:00 17505111   /usr/lib/kde4/plugins/imageformats/kimg_dds.so
001eb000-001ec000 rwxp 00006000 fd:00 17505111   /usr/lib/kde4/plugins/imageformats/kimg_dds.so
001ec000-001f3000 r-xp 00000000 fd:00 17505113   /usr/lib/kde4/plugins/imageformats/kimg_eps.so
001f3000-001f4000 rwxp 00006000 fd:00 17505113   /usr/lib/kde4/plugins/imageformats/kimg_eps.so
001f4000-001f8000 r-xp 00000000 fd:00 17505115   /usr/lib/kde4/plugins/imageformats/kimg_exr.so
001f8000-001f9000 rwxp 00004000 fd:00 17505115   /usr/lib/kde4/plugins/imageformats/kimg_exr.so
001fc000-00200000 r-xp 00000000 fd:00 2327416    /lib/libgthre
Program received signal SIGABRT, Aborted.
[Switching to Thread -1208838448 (LWP 22136)]
0x00110402 in __kernel_vsyscall ()
(gdb) pplatex: Copy data to 1lyxpreview.dvi

(gdb) bt
#0  0x00110402 in __kernel_vsyscall ()
#1  0x006fd690 in raise () from /lib/libc.so.6
#2  0x006fef91 in abort () from /lib/libc.so.6
#3  0x007359eb in __libc_message () from /lib/libc.so.6
#4  0x0073dac1 in _int_free () from /lib/libc.so.6
#5  0x007410f0 in free () from /lib/libc.so.6
#6  0x00bf46f1 in operator delete () from /usr/lib/libstdc++.so.6
#7  0x08998167 in __gnu_norm::list<boost::shared_ptr<lyx::support::ForkedProcess>, std::allocator<boost::shared_ptr<lyx::support::ForkedProcess> > >::erase (this=0x8cabc38, __position={_M_node = 0xa0ece50})
    at /usr/lib/gcc/i386-redhat-linux/4.1.2/../../../../include/c++/4.1.2/ext/new_allocator.h:94
#8  0x08997f2c in lyx::support::ForkedcallsController::kill (this=0x8cabc38, pid=22185, tolerance=0) at /usr/lib/gcc/i386-redhat-linux/4.1.2/../../../../include/c++/4.1.2/debug/list:262
#9  0x089474cd in stop (this=0xa0ed1ac) at PreviewLoader.cpp:393
#10 0x0894e60a in ~Impl (this=0xa077210) at PreviewLoader.cpp:432
#11 0x0894e90e in ~PreviewLoader (this=0x0) at ../../boost/boost/checked_delete.hpp:34
#12 0x08964987 in boost::detail::sp_counted_impl_p<lyx::graphics::PreviewLoader>::dispose (this=0x0) at ../../boost/boost/checked_delete.hpp:34
#13 0x08964dab in std::_Rb_tree<lyx::Buffer const*, std::pair<lyx::Buffer const* const, boost::shared_ptr<lyx::graphics::PreviewLoader> >, std::_Select1st<std::pair<lyx::Buffer const* const, boost::shared_ptr<lyx::graphics::PreviewLoader> > >, std::less<lyx::Buffer const*>, std::allocator<std::pair<lyx::Buffer const* const, boost::shared_ptr<lyx::graphics::PreviewLoader> > > >::_M_erase (this=0x9863ae8,
    __x=0xa03aaf0) at ../../boost/boost/detail/sp_counted_base_gcc_x86.hpp:145
#14 0x08964d82 in std::_Rb_tree<lyx::Buffer const*, std::pair<lyx::Buffer const* const, boost::shared_ptr<lyx::graphics::PreviewLoader> >, std::_Select1st<std::pair<lyx::Buffer const* const, boost::shared_ptr<lyx::graphics::PreviewLoader> > >, std::less<lyx::Buffer const*>, std::allocator<std::pair<lyx::Buffer const* const, boost::shared_ptr<lyx::graphics::PreviewLoader> > > >::_M_erase (this=0x9863ae8,
    __x=0x999f778) at /usr/lib/gcc/i386-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:1264
#15 0x08961cc6 in ~Previews (this=0x8caba00) at /usr/lib/gcc/i386-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:578
#16 0x08961cfc in __tcf_0 () at Previews.cpp:35
#17 0x0070063e in exit () from /lib/libc.so.6
#18 0x06cdc43c in qt_message_output () from /usr/lib/libQtCore.so.4
#19 0x06cdc4f8 in qFatal () from /usr/lib/libQtCore.so.4
#20 0x00ec16a3 in KGlobal::mainComponent () from /usr/lib/libkdecore.so.5
#21 0x001f094c in ?? () from /usr/lib/kde4/plugins/imageformats/kimg_eps.so
#22 0x06fd6003 in QImageReader::read () from /usr/lib/libQtGui.so.4
#23 0x06fd65c7 in QImageReader::read () from /usr/lib/libQtGui.so.4
#24 0x06fca80b in QImage::load () from /usr/lib/libQtGui.so.4
#25 0x0886f647 in lyx::graphics::QLImage::load_impl (this=0x986ce50, [EMAIL PROTECTED]) at QLImage.cpp:165
#26 0x0893044d in lyx::graphics::CacheItem::Impl::loadImage (this=0x95e65f0) at GraphicsImage.h:178
#27 0x08930966 in lyx::graphics::CacheItem::Impl::convertToDisplayFormat (this=0x95e65f0) at GraphicsCacheItem.cpp:419
#28 0x08930f88 in lyx::graphics::CacheItem::Impl::startLoading (this=0x95e65f0) at GraphicsCacheItem.cpp:219
#29 0x08930fcb in lyx::graphics::CacheItem::startLoading (this=0xa08e748) at GraphicsCacheItem.cpp:157
#30 0x0893bd6e in lyx::graphics::LoaderQueue::loadNext (this=0x8cab8c0) at LoaderQueue.cpp:48
#31 0x0893d932 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, lyx::graphics::LoaderQueue>, boost::_bi::list1<boost::_bi::value<lyx::graphics::LoaderQueue*> > >, void>::invoke ([EMAIL PROTECTED]) at ../../boost/boost/bind/mem_fn_template.hpp:49
#32 0x080b13d3 in boost::function0<void, std::allocator<void> >::operator() (this=0xa0236c4) at ../../boost/boost/function/function_template.hpp:692
#33 0x080cc944 in boost::signal0<void, boost::last_value<void>, int, std::less<int>, boost::function<void ()(), std::allocator<void> > >::operator() (this=0x8cab92c)
    at ../boost/boost/signals/signal_template.hpp:119
#34 0x08697983 in lyx::Timeout::emit (this=0x8cab92c) at Timeout.cpp:54
#35 0x086ea0c0 in lyx::qtTimeout::timerEvent (this=0xa0267d8) at ../../../src/frontends/Timeout.h:75
#36 0x06d94745 in QObject::event () from /usr/lib/libQtCore.so.4
#37 0x06f47ac0 in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#38 0x06f4da09 in QApplication::notify () from /usr/lib/libQtGui.so.4
#39 0x086f0548 in lyx::frontend::GuiApplication::notify (this=0x95be6e8, receiver=0xa0267d8, event=0xbfdd3e68) at GuiApplication.cpp:254
#40 0x06d8675b in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#41 0x06da9fdd in ?? () from /usr/lib/libQtCore.so.4
#42 0x06da7740 in ?? () from /usr/lib/libQtCore.so.4
#43 0x004cb05c in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#44 0x004ce49f in ?? () from /lib/libglib-2.0.so.0
#45 0x004cea05 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#46 0x06da7ca8 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#47 0x06fc0fe5 in ?? () from /usr/lib/libQtGui.so.4
#48 0x06d85c81 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#49 0x06d85d8c in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#50 0x06d8813a in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#51 0x06f470c7 in QApplication::exec () from /usr/lib/libQtGui.so.4
#52 0x086ef572 in lyx::frontend::GuiApplication::exec (this=0x95be6e8) at GuiApplication.cpp:175
---Type <return> to continue, or q <return> to quit---
#53 0x082d0264 in lyx::LyX::exec (this=0xbfdd4a6c, [EMAIL PROTECTED], argv=0xbfdd4b24) at LyX.cpp:480
#54 0x080694be in main (argc=1, argv=Cannot access memory at address 0x567c
) at main.cpp:48

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