proble on using visual studio

[John M]

Hello,

I am using Visual studio .NET 2003.

I had changed the start default project by :
project -> properties -> configuration properties -> start project
(the changed page was a frameset).

After that I have tried to change the start project again to the original.
(the original was *.aspx page)

I tried to run the program,
but I see a blank application running on the web page.

I cannot figure what's may be wrong,
since the code on aspx is the same,
and it can be run on the new project only (of the frameset page).

Thanks