just by accident, I found that this code crashes FASMW on compile:
    format ELF executable
entry start
section readable writeable
html:
        db 'Content-type: text/html',0Ah,0Ah
        db '<html><head><title>Fasm Worldwide</title></head>',0Ah
        db '<center><body bgcolor=Black text=Green>',0Ah
        db '<font face="sans-serif" size="10">',0Ah
; proably error is caused in line below
        db '<a href="http://flatassembler.net">fasm is everywhere</a>", 0Ah  
        db '<br>at www.decard.net too!',0Ah
        db '</center></font></body></html>'
  .size = $ - html - 1
section readable executable
start:
        mov     eax,4
        mov     ebx,1
        mov     ecx,html
        mov     edx,html.size
        int     0x80
        mov     eax,1
        xor     ebx,ebx
        int     0x80