Chip Bennett

1. Does your current user belong to the “Administrator” user role?
2. Are you using a single-site install, or a multi-site install?

As Elegant Themes is a commercial Theme shop, that provides commercial support for their products, you should consult their support offerings.

Also: TimThunb should be considered as an inherent security risk on any WordPress site. I strongly recommend against using any Theme or Plugin that incorporates TimThumb.

Use FTP, and delete the mygrid2 Theme entirely. i.e. delete this:

wp_content\themes\mygrid2

Then, using your browser, navigate to your WP-admin backend. At that point, WordPress will automagically revert to the default Theme.

Then: update your WordPress installation. Why on earth are you still using WordPress 2.9.2? That version is well over 2 years old.

Here’s the diff for Twenty Eleven 1.3 compared to the previous version, 1.2:
http://themes.trac.wordpress.org/changeset?old_path=/twentyeleven/1.2&new_path=/twentyeleven/1.3

That URL structure has a standard convention, that can be applied to any Theme, and any version. You just need to know:

1. Theme slug
2. Old version number
3. New version number:

http://themes.trac.wordpress.org/changeset?old_path=/{themeslug}/{oldversion}&new_path=/{themeslug}/{newversion}

Where did you download the Fresh & Clean Theme that you’re currently using on your self-hosted WordPress install?

If you want the second menu to be dynamic, then you don’t actually want to use wp_nav_menu(). For all of its benefits, one of its limitations is that it is static. It doesn’t change based on context.

I would recommend, instead, using wp_list_pages(), which accepts a 'child_of' parameter.

Do you want the second menu to display pages that are children of the current page, or that are children of the current page’s parent page?

Just FYI, the code was moderated, so I never saw it.

There’s no reason you can’t put all of those options on one settings page. Just a fair warning, though: I’ll rely heavily on my tutorial (that Esmi linked, above). I would strongly recommend giving it a read, and then let me know what questions you have about following it.

Sorry, I’m confused by this:

I want to make my own main section in admin sidebar and place them under 3 different sub menus.

…compared to this:

I said that I found the theme options I want to include in my theme in three separate tutorials but I want to add them in one single submenu (in appearance as you said).

Probably due to insufficient amount of coffee today, I’m not following you. Let’s start from the beginning: leaving aside any tutorials you’ve found, what exactly do you want to do in your Theme? Once I’ve grasped that, I’ll try to help walk you through it.