I just installed wpilauncher for the first time. After going through the tedious task of providing user names and passwords for a platoons worth of people it informed me that the product had been previously installed. I found this a novel means of getting software is installed. This Hard Drive has only...

There are several reasons for 500 error. You may get this error message from your proxy server, also when your server send cookie with back response. What security mode you have used in your script ?