It's not a "with sources" build based on your post.
The project itself is rather complicated, so I can't just send it to you.
I've tried created a very simple project to reproduce the problem, but so far no luck. The symptom is this:
I have a relative complex form, lots of panels and a listview. Actually it's not that complex, but it *does* have more than just a couple of controls on it.
1. When I get compilation errors while modifying the code of the form, often the Designer decides it doesn't want to display any more. So, I close and reopen the designer and life goes on.
2. If the Designer is open when my machine goes to Sleep, when I wake my machine up, I get the "Cannot access disposed object." error.
Windows 7, VS 2010 10.0.30319.1 RTMRel.
Are there recent patches of VWG to apply?