TinyMCE buttons got lots in WPMU 1.2.1

Apparently one of my plugins was outputting an extra couple lines of non-php at the end of the file.

I found this solution:

• With plugins, extra lines after the php-end seems to be the source of the problem

I tweaked my plugins and now the issue seems to be solved. Great!

Might not be an issue for WordPress, maybe only WordPress MU.

Note: this fix is also needed for all files included in the theme of course!