I have installed proteus so many time on mmy lenovo laptop. all the time I encountered this problem. the problem is when I install proteus, as a demo version it works well. but when update to pro version, it works abnormally like the grid is absent, most importantly, majority of the components are absent then when I search components for use like T block they don't give any clue. Is this the problem regarding libraries. Is this the problem regarding my machine (laptop) ? I am using windows 10 now. I faced similar problem in wndows 8.1. any solution..