Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

[MMMM]

Backtrace for this error:
#0 0x7fded93c03ff in ???
#1 0x2384e05 in ???
#2 0x23897d7 in ???
#3 0x2c84632 in ???
#4 0x21c0316 in ???
#5 0x14fef76 in ???
#6 0xf968e6 in ???
#7 0xdb56dd in ???
#8 0x4163fb in ???
#9 0x416a5b in ???
#10 0x416a5b in ???
#11 0x406481 in ???
#12 0x405a8c in ???
#13 0x7fded93ac554 in ???
#14 0x405ac3 in ???
#15 0xffffffffffffffff in ???