trackback URL’s are broke after upgrade to 2.0

Upgraded a couple of days ago from 1.5 to 2.0.

The trackback URL’s generated are like this:
https://mysite.com/wp/YYYY/MM/DD/article_title/trackback/

However, the link causes an error, whereas normally it would simply redirect to the article it references.

Notice the message from Apache:
OK
The document has moved here.
Apache/1.3.34 Server at meeciteewurkor.com Port 80

This has caused trackbacks to break and not be posted.
I’ve posted a few times about this and the forum search isn’t working.
Could someone point me in the right direction on how to fix this?

Here’s my htaccess from my wordpress directory which is in a directory called /wp/ :
# BEGIN WordPress

RewriteEngine On
RewriteBase /wp/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /wp/index.php

# END WordPress

Other than the trackback problem, everything is fine. I may mention that I switched to the default theme and the trackbacks do the same thing.

Thanks for any help!