hpnvin

That was it. The permission for these files had to be changed to read-write. Now, it works on 3.4.2 too!

Well, I may have the solution for this as well. I use IE 8. It does not resolve this particular line well (while Chrome does it)

$plugin_array['vecb_button'.$count] = $url.'/js/button'.$count.'.js';

I changed the script’s name to something without numbers and it started working fine in IE. This means I can’t use the “count” functionality to automatically add the buttons.

The plugin files are installed as Read-only for some reason in 3.4.2. So, the buttonX.js don’t get updated when custom buttons are added through the admin screen, hence don’t show up in the editors.

Now, I don’t have the authority to change file permissions. But if some one has, they can try it!