Custom Post Edit Page Blank

I wrote a quick little plugin that just creates a custom post type and taxonomoy. Everything works great for it except when I go to the page in the admin panel that has a listing of all the posts of that type. The page is completely blank. No error message, nothing but a solid white background. This happened after I decided to easily switch all my old posts to the new post type by just running a sql query on the database to change the ‘post_type’. I was able to do about half my posts with no problem. But the other half once changed causes the white page to reappear. I have tried tracking it down to a certain post that causes it with no luck for on some posts sometimes the white page will occur, while other times it appears fine. Also on this page 100% of the time, I cannot select and of the drop down menus on the left. It immediately closes them all up and does not let me reopen them. Any insight on what I could possibly be doing wrong would be great!