New Posts link throws an error

[setishock]

Last 300 Error Log messages in reverse order:

[Fri Feb 07 14:28:47 2014] [error] [client 75.66.73.69] File does not exist: /home/computer/public_html/404.shtml, referer: http://www.computervitals.org/forum.php
[Fri Feb 07 14:28:47 2014] [error] [client 75.66.73.69] File does not exist: /home/computer/public_html/collapse_40b_collapsed.gif, referer: http://www.computervitals.org/forum.php
[Fri Feb 07 14:28:36 2014] [error] [client 75.66.73.69] File does not exist: /home/computer/public_html/500.shtml, referer: http://www.computervitals.org/forum.php
[Fri Feb 07 14:28:31 2014] [error] [client 75.66.73.69] File does not exist: /home/computer/public_html/404.shtml, referer: http://www.computervitals.org/forum.php
[Fri Feb 07 14:28:31 2014] [error] [client 75.66.73.69] File does not exist: /home/computer/public_html/collapse_40b_collapsed.gif, referer: http://www.computervitals.org/forum.php
[Fri Feb 07 14:18:06 2014] [error] [client 75.66.73.69] File does not exist: /home/computer/public_html/404.shtml, referer: http://www.computervitals.org/forum.php
[Fri Feb 07 14:18:06 2014] [error] [client 75.66.73.69] File does not exist: /home/computer/public_html/collapse_40b_collapsed.gif, referer: http://www.computervitals.org/forum.php

The top 2 are when I clicked on the link and then went back to see the error. The 14:28 was the last time I clicked the link so that's the freshest data I have.
That came out of cpanel. If I need to contact my host let me know.

This is the htacess file.

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^http://computervitals.org/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://computervitals.org$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.computervitals.org/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.computervitals.org$ [NC]
RewriteRule .*\.(jpg|jpeg|gif|png|bmp)$ www.wallbase.net [R,NC]
<Files 403.shtml>
order allow,deny
allow from all
</Files>

The wallbase.net is when I turned on the antileach in cpanel last night and added a redirect link. I disabled that but looks like the rule remains. I can just edit that line out, right?
The problem was there before I did the antileach. Matter of fact the new posts link has never worked.
I'm using friendly url's. Could that be the problem? Maybe it doesn't work in that mode. ???