I downloaded and copied the adm-index.php to my server. It appears that fixed the problem.
I was checking the edit category pages and when I am on the edit pages for any category I was getting these errors at the top of the pages:
Warning: opendir(templates): failed to open dir: No such file or directory in /home/ggadmin/public_html/gallery/adm-cats.php on line 433
Warning: readdir(): supplied argument is not a valid Directory resource in /home/ggadmin/public_html/gallery/adm-cats.php on line 437
Warning: closedir(): supplied argument is not a valid Directory resource in /home/ggadmin/public_html/gallery/adm-cats.php on line 446
I tried uploading a new adm-cats.php but that didn't work this time. Here's the info thats on those lines:
433: $dir = opendir($dir_name);
437: while ($file_name = readdir($dir)) {
446: closedir($dir);
When I was about to report this I noticed that line 432 was:
$dir_name = "templates";
So I changed it to: $dir_name = "{$Globals['TMPL_PATH']}";
Looks like in 5.0.3 the template path isn't set to "{$Globals['TMPL_PATH']}" or something with upgrading a board to 5.0.3 prevented it from changing it to that. Anyway, it looks like everything is working right now.
I found out why the dates weren't showing. Appearantly after the update the date format readout was cleared and since it was empty it didn't show dates on any showgallery or showphoto pages. So that's resolved too.
Thanks for all your help omegatron. I can be a b|tch sometimes, but this is my baby.

I will probably have more questions as I spend the next few days tweaking my 5.0.3 install changing colors and general appearance.
Can you please make sure to delete my security info I sent to you. (Hey I'm paranoid what can I say.)
If you don't mind my asking, does 5.0.3 support UNLIMITED (yes I mean unlimited) categories? It was what forced me to upgrade so I would be interested in knowing. I do not consider ~65000 or some max limit of some var that seems super high to some people, I would like to truly know if there is a limit, even if it's in the millions.
Thanks again for all yer help Omegatron.