This is a great mod. It looks like you're looking for feature suggestions so if you'll permit me......I'm using this on a very active board and there's 2 features that would help me:
1) Users should be able to retract the ratings they gave somehow
2) It would be great if there was an option to make negative reporting anonymous

#1 is pretty much for sure on the list.

#2 not sure what you mean? the votes don't list who did them?

Regarding #1: great! Can't wait :D
Regarding #2: yes, I can see my suggestion wasn't clear but that is exactly what I mean. It's just that some of my users have expressed reluctance to give any more negative ratings because the users they have previously given negative ratings to have sometimes taken it very personally and even started vendettas against them.

How are they discovering who rated the thread negatively?

So all we need to upload is th helpfulanswers.php file?

Yes.

HA regular users. I made a post in another thread from a user asking about the support / innovation behind my mods and it seemed relevant here as well. As always my goal is to help the community but be honest about what I provide, please keep the feature ideas & comments coming... they are all welcome.

It's about their post being rated negatively, not their thread. They are discovering who rated their post negatively in the normal way.

The negative rating in helpful answers can be turned off, however, helpful answers doesn't publicly deliver who found it unhelpful, those ratings must be coming from your own rep system.

Here's how it works on my forum, and I thought how it worked on everyone's.
User A gives user B a helpful post rating (either good or bad)
User A gets a notification that they have a new helpful post rating. Clicking on the link in the drop down notifications menu takes them to this page:
profile.php?do=helpfulans
at which point they can see in the right-hand column who gave them the answer and whether it's good or bad.