if include file include another, the compiler make mistake, so the safe include level for fasm is only 1, never 2 above.

Please show your code. Because I don't experience this problem.

now i forge this. i already use sub thread to avoid this.

program.asm{
format mz
file 'c:\error\a86\peng\st_bios.com';can't change
file 'c:\error\a86\peng\40_25_b.com'
file 'c:\error\a86\peng\0-7_s.com'
file 'c:\error\a86\peng\0-page.com';can't change
include 'type_0eh.asm'
include 'frame.asm'
include 'frame2.asm'
include 'correct.asm'
include 'error.asm'}

frame.asm{
mov cx,0dh;top line
mov ah,2h
mov dh,0h
mov dl,0h
mov bh,0h
int 10h
_loop:
;call correct
include 'correct.asm'
loop _loop

mov cx,0dh;bottom line
mov ah,2h
mov dh,18h
mov dl,0h
mov bh,0h
int 10h
_loop2:
;call correct
include 'correct.asm'
loop _loop2 }

correct.asm{
mov ah,'j'
mov [_byte],ah
_0eh
mov ah,'n'
mov [_byte],ah
_0eh
mov ah,'s'
mov [_byte],ah
_0eh
ret}

type_0e.asm{
macro _0eh{
mov ah,0eh
mov al,[_byte]
mov bh,0h
int 10h}}