Here are several things to try:

1. Changed your configuration properties by right-clicking
the Solution in the solution explorer and selecting properties. Then
select the folder "Configuration Properties" and the sub-group,
configuration on the left. In the right hand window is a column for
the project's configuration, when it is set to "release", no debugging
works, change it to "debug" and the white question marks should go away and you can debug.

2. You have accidentally pulled up the wrong source file... maybe you wanted
a different default.aspx file.

3. For some reason, the debugger can not load symbols for your module. You
can check this out by looking in the modules window. What modules did
symbols not loaded for? You might have to get into break mode
(Debug->Break), and switch programs in the 'Debug Location' toolbar to find
your module.

4. Check the paths that the debugger is using to find the debug
symbol files. In the Solution Explorer window, right-click on the solution
and choose Properties. Under Common Properties | Find Debug Symbol Files,
make sure that the path to each of your symbol files is shown.

Next, when the project runs, open the Modules window and find the component
that you're trying to debug. This window will tell you whether debug symbols
were loaded for the component. If they weren't, right-click on the module
and select "Reload...". This will prompt you for a path to that module's
debug symbol file.

5. Track down and remove all the dll's associated with your projects and the do rebuilds.

>All,
>
>I am setting a breakpoint in a code behind file, but the app does not suspend and I get the following message:
>
>The breakpoint will not currently be hit. No symbols have been loaded for this document.
>
>How can I fix this?
>
>TIA
>
>Rex