@Leo:
Runtime error 204: (quote from FPC manual)

"204 Invalid pointer operation
This you will get if you call Dispose or Freemem with an invalid pointer (notably, Nil)"

Since the compiler works OK here, and at other people, my guess there is something wrong at you. Which version of ixemul.library do you have installed? Wrong version could cause memory corruption which can hurt the compiler, and result such error. Do you have MOS SDK installed? If not, did you install strip by hand? If yes, which version? (You need the one from MOS SDK!)