Flash and php Upload Applet works on PCs fine but not Mac browsers

I have a custom made flash upload applet to go into my main application. It allows users to queue up a large amount of files and upload them all at once. The system works great on all PC browsers. However, on Mac browsers, it doesn’t work properly. The first file gets stuck and is never completed. Here is the even more frustrating part: it works on the original coders server on my Mac, but not on my server where I need it to.

Original Coder’s Sever - http://oleh.iteh.com.ua/nirvanix/. Here is his php info page: http://oleh.iteh.com.ua/phpinfo.php

Our Server - http://clevertools.com/temp/flash_upload/. Here is our php info page: http://www.clevertools.com/phpinfo.php

I could really use some help here. My coder doesn’t have a Mac so it is making it impossible to fix. I was hoping some people here might have some insight. I think that possibly it could be a server configuration.

I also tried this on three different servers from friends. For example, on http://www.caneidia.com/temp/CT/ the first file actually gets sent to the server, but then gets stuck and doesn’t attempt to try the second one. Here is his php info: http://www.caneidia.com/temp/CT/phpinfo.php

So that makes three different scenarios on Macs. 1) My server doesn’t even get the first file to the server and it gets stuck. 2) Coders server works fine. 3) Friends server sends first file then get stuck.

Here is the source and compiled code.

Flash Uploader Files - http://clevertools.com/temp/flashUpl…2008-11-27.ZIP

Again, I really really appreciate any help. This is holding up the project and no one on my team can seem to figure it out. Thanks!