Trying to export A4 page to 1200dpi crashes

[Constantine Tsardounis]

Trying to export A4 page to 1200dpi crashes inkscape:

gdb output:
(gdb) run inkscape
Starting program: /usr/bin/inkscape inkscape
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe84a1700 (LWP 28330)]

** (inkscape:28325): CRITICAL **: Inkscape::XML::Document* sp_repr_read_file(const gchar*, const gchar*): assertion `Inkscape::IO::file_test( filename, G_FILE_TEST_EXISTS )' failed
[New Thread 0x7fffd70a5700 (LWP 28331)]
[Thread 0x7fffd70a5700 (LWP 28331) exited]
[Thread 0x7fffe84a1700 (LWP 28330) exited]

Program terminated with signal SIGKILL, Killed.
The program no longer exists.
(gdb) bt
No stack.
(gdb)

$ inkscape --version
Inkscape 0.48.3.1 r9886 (Sep 12 2012)

$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.10
DISTRIB_CODENAME=quantal
DISTRIB_DESCRIPTION="Ubuntu 12.10"

$ uname -a
Linux laren 3.5.0-21-generic #32-Ubuntu SMP Tue Dec 11 18:51:59 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

[Alvin Penner (apenner)]

- reproduced on Windows 7, Inkscape 0.48.4. Exporting to png at 300 dpi I get a crash with no exit message in DOS.

- not reproduced on Windows XP, Inkscape rev 12093. At 1200 dpi the export took about 15 minutes, png file size was 31 Mb.