profile field and dashbaord fixes

docs/changelog/7.x.x.txt

@@ -7,6 +7,7 @@
  - fix: Workflow activities don't pick up new default values
  - safely allow sorting by more fields in collaboration systems
  - fix: iCal link on calendar doesn't work
+ - fix: error when deleting profile fields with non-alphanumeric names
  - add: Friends Network
 
 7.4.10

docs/gotcha.txt

@@ -7,6 +7,13 @@ upgrading from one version to the next, or even between multiple
 versions. Be sure to heed the warnings contained herein as they will
 save you many hours of grief.
 
+7.5.0
+--------------------------------------------------------------------
+ * The 7.4.8 upgrade script had an error for sites using Dashboards.
+    This would prevent the script from completing successfully.  The
+    script has been fixed for future releases.
+
+
 7.4.3
 --------------------------------------------------------------------
 

docs/upgrades/upgrade_7.4.8-7.4.9.pl

@@ -65,7 +65,7 @@ sub fixDashboardContentPositions {
 		    fieldType=>'textarea'
             });
         my $oldContentPositionId = $dashboardId."contentPositions";
-        my $userPositioning = $db->read("select userId, `".$oldContentPositionId."` from userProfileData");
+        my $userPositioning = $db->read("select userId, " . $db->dbh->quote_identifier($oldContentPositionId) . " from userProfileData");
         while (my ($userId, $positions) = $userPositioning->array) {
             $db->write("update userProfileData set $newContentPositionId = ? where userId=?", [$positions, $userId]); 
         }