Is there anything in particular that's missing or that you're looking for? The Windows menu can include command panels that aren't included in the default installation, so it's possible that the instructor had added some extensions.

Feel free to include a screenshot of your Windows menu. I can certainly compare it to my own (Fireworks CS6 on a Mac).

Regarding Workspace Layouts, this is what I've got at the bottom of the Windows menu:

The first layout, Default, is actually a custom one that I created (based on the default Expanded mode). The other three are standard.

The exact same set of options are available from the upper-right hand corner of the interface, next to the Search bar:

Regarding deleting workspaces, I believe this would generally be done very infrequently, and handled manually. Here are some links on the subject:

http://www.shaunambrose.com/2011/02/07/how-to-delete-a-custom-workspac e-in-adobe-fireworks/

http://www.fireworkszone.com/workspace-management_520.html

http://www.fireworkszone.com/workspace-management_525.html

http://www.adobe.com/devnet/fireworks/articles/workspace_manager_panel .html

The Workspace Manager extension would likely work in CS6, but I'm not sure it's worth the bother; the only unique feature I noticed that it offers is the ability to delete a workspace, which as I said would typically be done only rarely and can be handled manually. (A workspace layout is something you create for tasks that you'll likely repeat many times in the future; so it's something you usually want to keep.)

As long as you can access the Workspace Layouts from the interface menu at top right, that should be fine. (I'm on a Mac; I don't know if those layouts are commonly listed in the Window menu for Windows users or not, but it's the same set of items.)

Not sure about your second question; in fact, you didn't really ask a question there. Points 2 and 3 in the following link discuss how to handle the crash issue, which I'm otherwise unfamiliar with: http://www.fireworkszone.com/workspace-management_525.html