diff --git a/mozilla/tools/tinderbox/build-seamonkey-util.pl b/mozilla/tools/tinderbox/build-seamonkey-util.pl
index 97846104d72..f15af9afab0 100644
--- a/mozilla/tools/tinderbox/build-seamonkey-util.pl
+++ b/mozilla/tools/tinderbox/build-seamonkey-util.pl
@@ -24,7 +24,7 @@ use Config;         # for $Config{sig_name} and $Config{sig_num}
 use File::Find ();
 use File::Copy;
 
-$::UtilsVersion = '$Revision: 1.260 $ ';
+$::UtilsVersion = '$Revision: 1.261 $ ';
 
 package TinderUtils;
 
@@ -1628,6 +1628,11 @@ sub run_all_tests {
         }
       }
 
+      # Call get_profile_dir again, so it can find the extension-salted
+      # profile directory under the profile root.
+
+      $profile_dir = get_profile_dir($build_dir);
+
       #
       # Find the prefs file, remember we have that random string now
       # e.g. <build-dir>/.mozilla/default/uldx6pyb.slt/prefs.js