Program received signal SIGFPE: Floating-point exception - erroneous arithmetic operation.

Backtrace for this error:
#0  0x15555459d7a2 in ???
#1  0x15555459c935 in ???
#2  0x15555384e5af in ???
#3  0x1555547f224a in ???
#4  0x1555547f3bc0 in ???
#5  0x1555547ea701 in ???
#6  0x1555547ea8d5 in ???
#7  0x40e385 in __astero_def_MOD_show1_sample_results
	at public/astero_def.f90:1237
#8  0x41059c in __astero_def_MOD_show_all_sample_results
	at public/astero_def.f90:1306
#9  0x410772 in __astero_def_MOD_save_sample_results_to_file
	at public/astero_def.f90:1021
#10  0x42fb4c in do1_grid
	at private/astero_run_support.f90:357
#11  0x42fb4c in __astero_run_support_MOD_do_get_parameters_from_file
	at private/astero_run_support.f90:308
#12  0x430583 in __astero_run_support_MOD_do_run_star_astero
	at private/astero_run_support.f90:186
#13  0x41cb05 in __astero_lib_MOD_run_star_astero
	at public/astero_lib.f90:62
#14  0x4071b7 in run
	at src/run.f90:5
#15  0x4071b7 in main
	at src/run.f90:2
make: *** [/mnt/home/pmocz/ceph/mesa-git-tests/tmp.SUxd5HNI20/star/work/Makefile:16: run] Floating point exception (core dumped)