VSeWSS Debugging has just stopped working????

Hi All, when I did my clean install, I created a simple "hello World" web part. Pressed F5 and it deployed and debugged - Hooray. (VS2005, SP1, VSEWSS, SQL Server 2005)

Now I am starting to work on the real web part, I have run into two problems.

The first is the most worrying: Pressing F5, fires up the build, and the deployment, BUT never fires the browser or the debugger. It just says deploy successful. Now I do have ASP debugging enabled in IIS, and it DID work at first.

Can anyone tell me how to get this working again please

The second is that after one or two succesful deployments, it suddenly stops deploying with a weird error of:

"Object reference not set to an instance of an object".

So I then go to another webpart project and that deploys once OK, and then that fails too.

The only solution seems to be to create a NEW site collection and point the browser there. I tried deleting and creating a new site collection (the default port 80 one) but this just fails - it had to be a new name e.g. /sites/newSite

This is really slowing me down - I'd be really grateful if someone can help

Pressing F5 gives an output window = but no browser and sadly no debugging