So let me get this straight. You took a screenshot, pasted it into OpenOffice, then created a PDF, and then attached that to the post.
Just for reference, it is somewhat simpler if you take the screenshot, paste it into a paint program of your choice (MS PAint, paint.net, GIMP, whatever), save it as a picture, and attach that.
Now, regarding the error message: It is actually remarkably clear. The code is looking for an event named "FLUSH DirectiveDummy", but can't find it in the mission. You should probably add it.