Upload Button Fails after 2.5 Upgrade

Hello,

Firstly, I just want to say that I absolutely love this script. Anyhow, I'm building a new site, and I previously had a site using this script before and everything went well. Installed this script again and everything was ok, but I upgraded from 2.4-2.5 and now I have the following issues:

1) My video test doesn't play and it keeps telling me I need to install flash! (uploaded to my other site running on 2.4 and it's fine) - http://www.geekvids.net, 2.4, ok; http://www.sporetube.com, 2.5, fail
2) My upload button on the upload.php page doesn't work anymore either - although it may be due to me trying to make use of my progress bar.

Please help. I spent a ton of time making the template and tweaking it to my liking/design, then find out it doesn't upload/play videos - I was bummed.

My website that I'm having problems on is: http://www.sporetube.com

Any help that anyone can provide would truly be awesome as I've spent a few hours trying to figure it out.

Regards,
Joel