Salesforce App follow stopped working - salesforce

Question

My company has an app that they got off of the app exchange(Note: before I started) that allowed you to follow or unfollow large number of cases/accounts/opportunities etc in salesforce.com. Supposedly it worked before and now it isn't working. I need an idea of what is wrong with the code for each button. If I can't fix them, any ideas for a replacement app? The app is no longer on the app exchange any more.
here's the code for the follow button:
{!REQUIRESCRIPT("/soap/ajax/18.0/connection.js")}
//EDIT THE FOLLOWING LINE TO ALTER THE CODE FOR OTHER OBJECTS. USE THE PICKLISTS ABOVE TO SELECT FIELD TYPE = $ObjectType AND THE OBJECT NAME THEN REPLACE "$ObjectType.Case" WITH YOUR NEW OBJECT NAME
var records = {!GETRECORDIDS( $ObjectType.Case)};
function LBox() {
var box = new parent.SimpleDialog("steve"+Math.random(), true);
parent.box = box;`
box.setTitle("Follow Records");
box.createDialog();
box.setWidth(220);
box.setContentInnerHTML("<img src='/img/loading32.gif' alt='' /> Running");
box.setupDefaultButtons();`
box.show();
}
function CBox(){
box.setContentInnerHTML("You are now following "+follow_count+" records<br /><br />Close");
}
if (records[0] == null) {
alert("Please select at least one record.");
}
else {
var follow_count = 0;
LBox();
for (var i = 0; i < records.length; i++){
var fol=new sforce.SObject("EntitySubscription");
fol.ParentId = records[i];
fol.SubscriberId = '{!User.Id}';
try{
sforce.connection.create([fol]);
follow_count++;
}
catch(e){
alert(e);
}
}
CBox();
}
here's the unfollow button:
{!REQUIRESCRIPT("/soap/ajax/18.0/connection.js")}
// EDIT THE FOLLOWING LINE TO ALTER THE CODE FOR OTHER OBJECTS. USE THE PICKLISTS ABOVE TO SELECT FIELD TYPE = $ObjectType AND THE OBJECT NAME THEN REPLACE "$ObjectType.Case" WITH YOUR NEW OBJECT NAME
var records = {!GETRECORDIDS( $ObjectType.Case)};
// display running message popup
function LBox() {
var box = new parent.SimpleDialog("steve"+Math.random(), true);
parent.box = box;`
box.setTitle("Unfollow Records");
box.createDialog();
box.setWidth(220);
box.setContentInnerHTML("<img src='/img/loading32.gif' alt='' /> Running");
box.setupDefaultButtons();
box.show();
}
// display output message
function CBox(){
if (unfollow_count < records.length)
box.setContentInnerHTML("You have now unfollowed "+unfollow_count+" records. You were not following the other selected records. <br /><br />Close");
else
box.setContentInnerHTML("You have now unfollowed "+unfollow_count+" records. <br /><br />Close");
}
if (records[0] == null) {
alert("Please select at least one record.");
}
else {
var unfollow_count = 0;`
LBox();
try {
// find following records
var searchstring = "SELECT Id FROM EntitySubscription WHERE (ParentId IN (";
for (var i = 0; i < records.length - 1; i++) {
searchstring += "'" + records[i] + "',";
}
searchstring += "'" + records[records.length - 1] + "') AND SubscriberId ='{!User.Id}')";
var resultRecords = sforce.connection.query(searchstring).getArray("records");
// delete following records
var recordIds = [];
for (var i = 0; i < resultRecords.length; i++) {
recordIds.push(resultRecords[i].Id);
unfollow_count++;
}
sforce.connection.deleteIds(recordIds);
} catch(e) {
alert(e);
}
CBox();
}
The first error message has to do with permissions, I don't get this error because I have admin rights, the second error is only on the account tab's button. I'm more worried about the permissions problem, is there anything there about permissions. Any help is great!

Answer 1

I think the issue is a throttle in SFDC, you are limited to following only a certain number of records per user. If this app was designed as you described to mass-follow records, it's possible your hitting that throttle, which is kind of the impression I get from the error your co-worker is receiving about at most 1000, also if it worked before, it would make sense that you have maxed out a limit for the org/user

Answer 2

Queries on EntitySubscription by users who aren't system admins must contain a LIMIT. If you change the query code in the button to the following it should work:
// find following records
var searchstring = "SELECT Id FROM EntitySubscription WHERE (ParentId IN (";
for (var i = 0; i < records.length - 1; i++) {
searchstring += "'" + records[i] + "',";
}
searchstring += "'" + records[records.length - 1] + "') AND SubscriberId ='{!User.Id}') LIMIT 1000";