Trackbacks aren’t working on my blog

Yep, had problems like that. Solutions (choose one):
1. Add to .htaccess:
<Files "index.php">
AcceptPathInfo On
</Files>
2. In wp-comments.php, change the trackback link info to:
<?php bloginfo('url'); ?>/trackback.php?p=<?php the_ID() ?>
3. In template-functions-comment.php, go to the trackback_url function and change:
$tb_url = get_settings('siteurl') . '/wp-trackback.php/' . $id;
to:
$tb_url = get_settings('siteurl') . '/wp-trackback.php?p=' . $id;

Okay, Kafkaesqui, it’s done, just as outlined.
That fixed the URI for the trackback to the proper style, but when I enter that URL in the browser and press go, I get a HTTP 404 “The page cannot be found” error.
aren’t the trackback URI’s supposed to resolve to the post itself?

Yes, finally! That fixed my trackbacks! THANKS. Been diggin thru the forums for days, and your the first person to actually help out and get something going that I could try that workd.

Kafkaesqui, DANG! DANG! Now that you showed me that, I should have noticed that, myself!
I was so far into this, getting so frustrated, I couldn’t see the forest for the trees, so to speak.
As 7milesdown said…you have done a good thing, my friend! This needs to go in the WIKI.
Many thanks! Off I go to fix this now.

I used the above 3 fixes, and did incoming and outgoing links (did a link to WordPress post from MT, which WordPress recorded and put under my comments) but the WP post I did referringf to a MT post did NOT show on the MT blog. So, my incoming tb’s work (WordPress received it from my MT blog) but my MT blog did not receive it from WordPress). I put the htaccess file in my WordPress root. Any ideas?

There could be something wrong with your MT blog. Does it correctly receive trackbacks from other sources?

Yes, it does receive trackbacks from other blogs. I just tried it from my dotText blog, to the entry at
https://theoblogical.org/movtyp/archives/003642.html from
https://blogs.theoblogical.org/blog/archive/2004/11/13/328.aspx

I tried Door #1 and received a 500 error when trying to edit posts. I using shared hosting, which must dislike adding to .htaccess your suggestion:
<Files "index.php">
AcceptPathInfo On
</Files>

Both my incoming and outgoing trackbacks have stopped working. I had toyed with permalinks changes, but gone back to default permalinks after I couldn’t get the archives for previous months to work even with the “rewrite rules”.
I tried number 1 and got an immediate internal server error. I tried just viewing my blog and got nothing but an internal server error. Had to upload a new blank .htaccess by FTP to make the site work again.

My incoming trackbacks work–as far as I know, since no one has said otherwise when sending trackbacks–but my outgoing ones are completely ignored when I put them in the trackback information fields on “Create New Post.”
As a result I have to do a manual trackback, which is a total pain in the a$$.
When I look at the edit post frame after saving/publishing, it DOES show the information in the fields as having been saved, but nothing is going to the trackbacked post.
Any ideas?