Display Morewell..
the changes made in all versions do not have the purpose of not appearing in the PluginBrowser, in fact it does not hit anything.
I have not had these problems, but I have a zgemma H5, and we have tested on H7 and CVS image and v.6.1 has changes only for previewing and deleting the label in the skin, inserting the buttons in their place.
That's all.
I do not know why this happens to you.
Try new v.6.2
no luck mate 6.2 installed fine aswel restarted box after aswel but still not showing in plugins strange