Have you checked my post ? http://ww.wp.xz.cn/support/topic/tinymce-buttons-lost-when-using-with-syntaxhighlighter-tinymce-button-in-35
It might be the same issue.
Removing the call to wp_tiny_mce() fixed the issue and I didn’t encountered any other issue so far (I still don’t know what this call does though…)
You’re right, I’ll create a new topic.
Edit : In fact, after further investigations, the issue is not caused by this plugin, but by “WPMU Prefill Post”.
But the issue only appear when both plugins are active… I guess the issue is on the other plugin.
I have that same issue on Chrome & FF… I’d love to have a solution.
If I enable the plugin, all the “advanced” buttons in the TinyMCE toolbar disappear (more, spellchecking, advanced options button, other custom buttons…).