Run Pilgrimage mission (http://www.armaholic.com/page.php?id=24665) via scenarios menu. Note described issues along initialization after intro sequence (skip the intro). If not present - repeat.
It's possible, but not certain (my observations suggest that), some of these issues may require previewing Pilgrimage mission in editor first. Here's unpacked version:
https://dl.dropboxusercontent.com/u/102178499/Pilgrimage_1.93.Altis.zip