Can't upload images – get error

I just installed WordPress locally using WAMP. I installed a theme that uses UPLOADIFY. When I try to upload an image file in the post, I get popup error as follows:

Server Response:
<b>Deprecated</b>: Function split() is deprecated in <b>C:\wamp\www\mysite\wp-content\themes\fresh_trailers_v2\uploadify.php</b> on line <b>33</b>
1
There was a problem uploading the file, please try again later

I have very limited coding knowledge, and am wondering if anyone knows the problem?

If you need to see the theme files, you can download them here:
https://www.5themes.com/wp-content/uploa … ers_v2.zip