Java Image Uploader 5.0.15.0 gives server redirect error

I am currently doing work for a client who recently purchased your Dual Image Uploader application. The Active X version seems to work fine in Internet Explorer, however I am getting the following error meesage below with the Java Image Uploader version 5.0.15.0 in Firefox version 2.0.0.11. I am integrating the tool in an ASP.NET 2.0 environment.

The problem occurs when I select some images from the tool and click the Submit button. It gives me a

"The server attempted to redirect you, but server redirects are not supported" error.

Could you please tell me if this is being fixed or has been addressed. I did a search in your forum and found similiar problems including the session data disappearing and implementing a cookie fix but that did not help.