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Can you provide a view export which shows how to easy reproduce the issue?
At least it would be helpful to understand exactly what you did.

Hi, I have the same problem.

To reproduce:

1. create a view of nodes.
2. in format set "Show: Content | Full content"
3. in the format options select "Display comments"

By debugging I found that the problem is in node.tpl.php.
In hide($content['comments']);, $content['comments'] is not an array, is a string.
Then the function adds 1 to the string passed.

See #1194614: Comments do not render in a View of content.

I had this same issue going on, I realized it was because the content I was trying to add the comment attribute in the view, had comments defaulted to closed. Hope this helps.