I installed the joomlacomment4.0.0beta1.zip (I am using Joomla 1.5) and I got:

error when moving /var/www/vhosts/http://josiesquedesignsdev.com/httpdocs/administrator/components/com_comment/plugin/joscomment.php
TO /var/www/vhosts/http://josiesquedesignsdev.com/httpdocs/plugins/content/joscomment.php

So I coppied the file and put it where it said it needed it. I can go in to the settings. I selected to include my blog section (as shown in the movie tutorial)

But when I look at my blog there is nothing. I looked at the source code and I do not see any added code.

So, what do you think I should try now? Oh, and the first time I got the error etc I deleted all the files recomened in a previous post and installed the program again but had the same issue.