Join the club, a lot of people have Explorer crashing, but it's for many reasons that are hard to pin down. If it happens when right clicking, there is a good way to try and find it. Download ShellExview ShellExView - Shell Extension Manager For Windows
Those context menus when you right click are shell extensions that are populated with right click options for your applications. One or more of your 3rd party programs is killing it when you right click.
Open Shellexview and disable all non Microsoft extensions and see if you can still crash Explorer. if not, turn them on one at a time till you can find which one is the culprit.
You may or may not find one, but it's the best place to start.