"Have you tried rebooting?" - The usual first question from any desktop support engineer.....

I'll probably have to create a category that contains my experiences of trying to debug problems that don't exist.

Today at work a new server was built to host a Flex project I've been working on. Strangely the basic install of ColdFusion was only 7.0 so I went through the process of installing 7.0.1 & 7.0.2.

So I uploaded my code not entirely expecting everything to work first time and up popped the dreaded "send failed" message.

2 hours later I still couldn't figure out why flex wasn't talking to the new CF server. I'd messed with services-config.xml, crossdomain.xml and restarted the CF services but nothing worked.

I then used Microsoft Fiddler to see what was going on behind the scenes. The flex app was getting 404's when it made calls to the server's flex2gateway. Weird I thought everything seems to have installed ok.

As I was about to give up and go home to research the problem, I decided to reboot the server and sure enough afterwards, my app started to work!

Could have saved myself a couple of hours worth of time wasting...