i understand now. This sort of unexpected quit -- where it shows the "something went wrong" is what developers call a crash. But whatever you call it, it's definitely a bummer.
That shouldn't be happening. It's a bug.
One thing I notice from your screenshot: There are three resources in the sidebar that show the warning icon. This usually means that RW can't find those file/images any more. You should probably correct that as soon as you can.
But I think we're probably at the end of the road about what I can tell you on the forum. I'd recommend sending the file over to http://yourhead.com/support.
To send it you should zip up your file and you entire addons folder (yes, I know it might be big). Share a link to that file with our support folks with your favorite sharing service (we like Dropbox).
With the file and addons in hand, we should hopefully be able to see the crash happen and give you more precise info.