Pages for all older posts no longer load

I am actually running with ComicPress 2.9 through WordPress. I was recently trying to modify the menubar so that I could use images for the menu instead of text. I had it half working, but it was giving me a lot of issues, so I basically removed the code that I inserted to get back to where I was before. The front page looks about the way it was before I started making changes, but now all of my older posts are “gone.” If I go into the dashboard and look at my posts, they are all still there, but if I try to view them it just goes to a blank page. I even tried uploading a new comic with a date that is in the past, and this post wouldn’t show up when I tried to view it, either.

Is there a file that I maybe messed up that is preventing these from showing up when I try to view them?

I know that I took some stuff out of single.php, page.php and index.php pertaining to comments because I didn’t want comment boxes on my pages.

I don’t know a whole lot about PHP, so maybe I did screw something up after all…