Upgrade joomla component to 2.5

Project Description:
I purchased this script http://www.easyflashuploader.com/en/easy-flash-uploader-image-uploader#start

and someone made it into a joomla component for me with a few backend tweaks (added to email fields and included a way to change email address that files are sent to) and now since then i have upgraded to joomla 2.5 and it no longer works. Original script can be provided if that works better.

Attached is the script.

Also willing to change scripts if you have a similar script that can work on front end joomla. Must be able to upload multiple files, set limits to the kind of files that can be uploaded, progress bar. The most important thing is that the user does not need to have an account, they just need to enter some fields, upload files and submit. Similar to mail form uploader but a better uploader. Must be a secure form, maybe even have captcha.