tvheadend crash

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff5187700 (LWP 20120)]
_epg_object_set_grabber (o=0xa16880, grab=0x757540) at /home/john/projects/tvheadend/src/epg.c:237
237	       ((eo->grabber != grab) && (grab->priority > eo->grabber->priority)) ) {
(gdb) bt
#0  _epg_object_set_grabber (o=0xa16880, grab=0x757540) at /home/john/projects/tvheadend/src/epg.c:237
#1  0x0000000000408cf4 in _epg_object_set_u8 (o=Unhandled dwarf expression opcode 0x0
) at /home/john/projects/tvheadend/src/epg.c:263
#2  0x0000000000000125 in ?? ()
#3  0x0000000000a16880 in ?? ()
#4  0x0000000000000001 in ?? ()
#5  0x000000000042b1f5 in _eit_process_event (mod=<optimized out>, tableid=Unhandled dwarf expression opcode 0x1
) at /home/john/projects/tvheadend/src/epggrab/module/eit.c:486
#6  0x00007fffed6ecfc0 in ?? ()
#7  0x0000000000000000 in ?? ()