quicktags.js returns a javascript error that edButtons is not defined. Can fix it by wrapping in a try block. Code for quicktags.js:
try {
for (var i = 0; i < edButtons.length; i++) {
if (edButtons[i].id == 'ed_code') {
edButtons[i].id = 'ed_cc';
edButtons[i].display = 'cc';
edButtons[i].tagStart = '';
edButtons[i].tagEnd = '[/cc]';
codeTagIndex = i;
break;
}
}
} catch (err) {}