[Wien] SIGSEGV, segmentation fault occurred

[Bohdan Andriyevsky]

Dear WIEN2k users,
What can be the reason of the next STDOUT:

LAPW0 END
forrtl: severe (174): SIGSEGV, segmentation fault occurred
Image              PC        Routine            Line        Source             
lapw1c             0806AA7C  Unknown               Unknown  Unknown
lapw1c             08054C2F  Unknown               Unknown  Unknown
lapw1c             080734A6  Unknown               Unknown  Unknown
lapw1c             0804DDF4  Unknown               Unknown  Unknown
libc.so.6          00C46770  Unknown               Unknown  Unknown
lapw1c             0804DD01  Unknown               Unknown  Unknown

Crystal unit cell consists of 50 atoms (C, N, O, H). 
(OS: Red Hat Linux 9; processor: P3 1200 MHz; memory - 512 Mb).
Thanks in advance for yours help.

B.Andriyevsky