I created a python addin for ArcMap which works fine for me. Every time I open ArcMap the addin is displayed properly, ready to go. Yesterday I tested installing it for one of the end users. It installed fine, but it doesn't display. You have to right click the toolbar area then check the addin, then it shows up.
Every time ArcMap is opened it's necessary to right click and check the toolbar. Any ideas why it isn't just always displaying as it does for myself?