I am debugging your code and I would like to suggest some changes:
a) "/views/project/single.php" replace '<?' for '<?php' in line 29.
b) "cpm.php" function "cpm_hide_comments" is hiding all activities on Project Activities page.
If I just remove the
$clauses['where'] .= " AND cpm_p.post_type NOT IN('$post_types')";
the activities start to work.
I am using multisite and WP 3.5 in a linux environment. With these 2 changes everything seems to work.