Missing information in Notification mails

After upgrading form 4.6.2 to 4.7.3, the mails sent by Notify have missing info.

The nodes notification is fine. The strange part is the comments notification. It shows like this:

1 new comments attached to posted by author: [node's title]
[comment's title], by [comment's author]

- The comments are attached to... what? There are two spaces between "to" and "posted", indicating that in that place there should be a title (or type?) of the node which received the comments.

- The phrase says "posted by author". Shouldn't the word "author" be replaced by the username of the author of the node?

O don't know if this could have generated any problem with the database, but I installed the CVS version of the module, and replaced it by the 4.7.0 version afterwards.

Thanks