[Plugin: WP Thread Comment] Comment Form ID Error

[gwstacy]

When using WP Thread Comment plugin I receive this error: “ERROR: Can’t find the ‘commentformid’ div.”

At the plugin settings area and it has a box for editing the Comment Form ID, telling me: “Change the commentform ID in comments.php according to your theme. In most cases you will not need to do anything as this can be detected automatically.” (It is not automatic in my case.)

I do not know how to get to “comments.php”. I have gone through my theme (voidy) options area and I see nothing there.

I would really appreciate any help. Thank you.

[gwstacy]

Can someone tell me how to get to comments.php?
Would changing themes help?

Is there another plugin that does something similar that might work?