'-bnni' causes 'core dump' when using '-S' to reconstruct trees in a folder

[bingli8899]

Hi,

Whenever I used -bnni with -B 1000, it will cause "core dump" errors when using -S to specify a folder and -T auto. However, if I used a loop to loop through all fasta files within a folder, the running process is slow but it doesn't cause 'core dump'

Basically the code below will cause core dump:
PATH/iqtree2 -S path_to_folder -bnni -m MFP -b 1000 -T auto

However, this code below will not cause core dump:
PATH/iqtree2 -S path_to_folder -m MFP -b 1000 -T auto

I am wondering why. Thanks a lot!