In Linux, to help with debugging a problem, you may wish to get a core dump after a segmentation fault. To tell scorched3d to allow a core dump, run with the -allowexceptions flag. (ie: scorched3d -startserver server.xml -allowexceptions)
If this does not produce a core dump, you may also need to run ulimit -c unlimited on the command line prior to running scorched. (The default maximum size for core dumps is zero on some distributions)
To get some information about the crash, run gdb scorched3d core, then, in the debugger, type "where" and it'll show the last few functions before the crash.