1.) Under each icon in the side bar are the instrument selections missing. Normally there is a collapsible menu under the instrument icon to select the desired instrument. I do not have this menu and can not select an instrument from there. I have to open the library window.
Img no menu
img library window
2.) Kontakt 7 groove browser is empty for all abbey road drums and studio drummer. To check it, I have uninstalled "Abbey Road 50s Drummer" (windows installer) and reinstalled via Native Access without success.
img drumset (example for Studio Drummer)
3.) In Kontakt 6 I have no problems. In the image below you can see the menu of instruments in the side pane and the groove browser.
img Kontakt 6