didnt touch lua once..... i always finish the map layout (or atleast for the most part before i edit the some odd little things like mis placed props.)
besides the error said there was a problem with the mrq file...... which i would post but i dont know how =P
It said there was a problem with the .lyr file which is a text file of all the objects locations for any layer besides base layer, in your case the conquest.lyr.
It can be looked at with any text editor, have a look and see if all the brackets have matching pairs.