Shapefile support not working

[http://wiki.navit-project.org/index.php/user:petermckinley]

Navit won't launch / crashes when configured to use Shapefiles. Result is exactly the same with Shapefiles from 2 different makers, comprising identical 5 file types, (.shp .dbf .cpg .prj .shx) including ​http://download.geofabrik.de/

<mapset enabled="yes">

<map type="shapefile" enabled="yes" data="/path/to/myshapefile.shp"/>

Running Navit from Terminal:

" Attaching to program: /usr/bin/navit, process 4628 Could not attach to process. If your uid matches the uid of the target process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try again as the root user. For more details, see /etc/sysctl.d/10-ptrace.conf ptrace: Operation not permitted. /home/peter/4628: No such file or directory. No stack. The program is not being run. peter@LubuntuTest:~$ "

If I run Navit as root:

" "0x00007fe06f60b48a in GI_waitpid (pid=4755, stat_loc=stat_loc@entry=0x7ffccec91940, options=options@entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:29 29 ../sysdeps/unix/sysv/linux/waitpid.c: No such file or directory. #0 0x00007fe06f60b48a in GI_waitpid (pid=4755, stat_loc=stat_loc@entry=0x7ffccec91940, options=options@entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:29 #1 0x00007fe06f5842fb in do_system (line=<optimised out>) at ../sysdeps/posix/system.c:148 #2 0x0000000000420c8c in ?? () #3 <signal handler called> #4 0x00007fe063059aa0 in DBFGetFieldCount () from /usr/lib/navit/map/libmap_shapefile.so #5 0x00007fe06305687f in ?? () from /usr/lib/navit/map/libmap_shapefile.so #6 0x000000000042da17 in map_new () #7 0x00000000004167e4 in ?? () #8 0x00007fe0704bec53 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #9 0x00007fe0704bfd3b in g_markup_parse_context_parse () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #10 0x00000000004151e6 in ?? () #11 0x0000000000417497 in config_load () #12 0x000000000040f4de in main_real () #13 0x00007fe06f55f3f1 in libc_start_main (main=0x40f110 <main>, argc=1, argv=0x7ffccec935a8, init=<optimised out>, fini=<optimised out>, rtld_fini=<optimised out>, stack_end=0x7ffccec93598)

at ../csu/libc-start.c:291

#14 0x000000000040f149 in _start () Detaching from program: /usr/bin/navit, process 4754 peter@LubuntuTest:~$ "