ALERT!!!
SIRP Shouldn't have been released yet. It's not quite done. Wait for the file that is coming dated today, 5/31/15
If you have a zipfile dated earlier than that, please delete that installation from your simulator. Download the new one that will shortly be released with today's date of May 31st, and you'll have the proper release in hand.
Sorry for the confusion but emails got crossed and the earlier file was uploaded by mistake.
Brad