Quote Originally Posted by gibra View Post
Maybe because you're try to add buttons to the MZ-Tools toolbar.
Isuggest to create your own bar customed and add them there.
I thought it didn't matter what toolbar you added those buttons to, but the thing is you're right, I added them to the standard toolbar and they remained after I closed and restarted the IDE.

So there must be an issue with the MZTools bar.