Upload/Insert Button not working in customized theme

Hey All,

I’m having trouble using the upload/insert button in a post/page. When i click insert/upload or any button to upload files, theres a wordpress uploader box that appears at the bottom of the screen and is cut off, preventing me from seeing the upload link. I’ve managed to copy the text i can’t see, however since i’m not able to click directly on the “upload” button i cannot post anything with media. I tried deactivating my plugins, upgrading to version 3.4.2 and nothing seems to work. However i switched my theme to the twenty ten and it does appear to work. So im guessing the media upload in posts/pages is not working for customized themes… But i need it to work for other themes! Any suggestions?? Thanks!

Here’s the text thats appearing cut off in the wordpress uploader box at the bottom of the screen:

From Computer
From URL
Media Library
Add media files from your computer

Upload
Cancel

You are using the browser’s built-in file uploader. The new WordPress uploader includes multiple file selection and drag and drop capability. Switch to the new uploader.
Maximum upload file size: 25MB. After a file has been uploaded, you can add titles and descriptions.