Phil,
I read the thread and I know he's frustrated but to be honest, it's a personal responsibility to backup your computer and maybe even print out important e-mails. It's easy to blame everyone else for not doing your due diligence. It's not a question of if but rather when the computer dies. That said, below is the quoted information directly from my license e-mail with the appropriate information blocked. It looks like a little patience and he should be back up and running.
"2. Downloading Commercial PixInsight Software
Your commercial PixInsight license has an associated user account on our servers. Your account allows you to access our software distribution website, where you can download your copies of PixInsight for all supported platforms and operating systems. Here are your personal account data:
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Username : xxxxxxx
Password : xxxxxxxxxxxx
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Note that this account is strictly personal and non-transferable, as it is part of the End User License we have granted to you. This means that you can not share your user account data with third parties.
Our system has encrypted your password in our databases and we have no way to retrieve it for you, so please don't lose it. If you lose your password, you'll have to contact us to obtain a new one, but we'll ask you to authenticate yourself with your user identifier (see section 3 below).
To download PixInsight, visit the following URL with your browser:
http://dist.pixinsight.com/and specify your user account data above to log in. This will direct you to our software distribution interface. This interface is similar to a file browser, where you can follow links to download installation files. Choose the latest version(s) available for your platform(s) and operating system(s).
Note that your user account is permanent. This means that you can always use it to download copies of your licensed PixInsight software, whenever you need them. For example, when we release new versions of the PixInsight platform, or new or updated PixInsight modules, you may visit our software distribution website to download your licensed copies."
Steve