Good Morning Michael,
I received the following from a customer this morning:
After investigation, we found that your upload page does not appear to work with an authenticating proxy: i.e. a proxy server that may challenge the user for their credentials. Disabling authentication for that page allows the upload to complete. We would like to find out what the proxy support is for the product, especially authenticated proxy support.
I found a similar issue in the JFU forum from a year ago - the subject is "Error - http: 407" and I think the topic number is 2132. The post seems to describe the same situation (although I don't have any error codes or messages from my customer yet) and you were going to check with the author of the flash to see about a workaround.
I was wondering if you have had a chance to investigate this further and if there is anything I can tell my customer.