Visual editor not working with 3.0

I’ve replaced the wp-plugins and wp-admin folders…I get two JS errors.

Both the errors seem to point to Next Gen Gallery plugin, but when I disable that, it doesn’t help. Any ideas?

Error: tinyMCE is not defined
Source File: https://mydomainname/wp-includes/js/tinymce/langs/wp-langs-en.js?ver=327-1235100
Line: 1

and:
Error: tinyMCE is not defined
Source File: https://mydomainname/wp-admin/post.php?post=737&action=edit
Line: 1004

The first error references this (line 1):

tinyMCE.addI18n({en:{
common:{
edit_confirm:"Do you want to use the WYSIWYG mode for this textarea?",
etc...

The second error references this:

<script type="text/javascript">
/* <![CDATA[ */

// English lang variables for WP2.5

tinyMCE.addI18n({en:{
NextGEN:{
desc : 'Add NextGEN Gallery'
}}});

tinyMCEPreInit.load_ext("https://booksbythebanks.org/wp-content/plugins/nextgen-gallery/admin/tinymce", "en");
tinymce.PluginManager.load("NextGEN", "https://booksbythebanks.org/wp-content/plugins/nextgen-gallery/admin/tinymce/editor_plugin.js");

tinyMCEPreInit.go();
tinyMCE.init(tinyMCEPreInit.mceInit);
/* ]]> */
</script>