Error: The file ‘C:\FASTSearch\etc\middleware.cfg’ was not found.

If you are doing a multi-server install of FAST for SharePoint 2010 you may end up with this error. Possible causes:

• You specified the wrong Base Port.
• You did not configure your firewall properly to open up the necessary ports.
• You forgot to reboot your admin server. To make sure that FAST is running properly, use nctrl status on the admin machine.