The Preview plugin shouldn't care about the styles. It should still work no matter how things are styled.

The file you're using is called comments.php right? I would think as long as the active file is comments.php the preview plugin should work, but maybe there is some incompatibility between the two plugins.

Yeah, it is named that, and the Preview plugin doesn't work. So I was thinking it was reading some code off the original comments.php page (that isn't contained in the BTC comments page), hence the incompatibility.

If you renamed the original comments.php the preview plugin wouldn't be trying to read any code from it. All it will know is the name of the file and what to look for (assuming it's looking for something). If the original file has a new name the plugin wouldn't find it.

I know, I was referring to the new page. I was conjecturing that the "old" php page had a few lines of code or something that preview looked for in order to function properly.

I don't know what else "could" cause the incompatibility between the two. (Maybe it's because BTC's comments.php creates a new comments template, or perhaps it has to do with how the code is structured, or something different entirely.)

All I was saying is that there must have been *something* in the old comments file that enabled Preview to work properly. I wouldn't have thought that the BTC plugin itself would cause the problem.

Maybe it's just the opposite, maybe there's something extra in there that it doesn't like?

I think it's probably more something extra that BTC put in too. I don't think BTC removes anything from comments.php