A lot of windows structs won't compile if they have a db or db dup as the last field.
(I tried a couple of versions of struct.inc and am using the july 09 file. The problem is triggered by the ends macro. Am I missing something? Could some odd thing I defined earlier have confused some internal list?)

dw compiles fine, so I've been halving the dups and using that as a work around. There's no work around for some unaligned structs though, such as:

struct SHITEMID
cb DW ?
abID db ?
ends


produces all these errs.

flat assembler version 1.68 (1062223 kilobytes memory)
c:\fasmw\winstructs.inc [6172]:
ends
c:\fasmw\include\macro\struct.inc [85] ends [6]:
make@struct name,fields
c:\fasmw\include\macro\struct.inc [105] make@struct [13]:
match fields, define \{ define@struct fields \} }
c:\fasmw\include\macro\struct.inc [105] match [0]:
match fields, define \{ define@struct fields \} }
c:\fasmw\include\macro\struct.inc [113] define@struct [5]:
name#field type def
c:\fasmw\include\macro\struct.inc [133] db [8]:
rb sizeof.#name#field - ($-field)
error: invalid expression.

(ShItemID compiles fine with dw in the last field, but since its used as a packed list it needs a 3 byte struct.)

After swapping the fields position FASMW still gives me an error: "Error: definition of SHITEMID contains illegal instructions."

Replace "DW" with "dw" and it will work.