Recently I confront a problem, when I use schematic design in Quartus II 11.1 sp2, I can't paste symbols, the paste operation is disabled (showed in bar a grey), no matter I copy or cut anything, they can not be pasted. Did anybody confront similar things like me ?Thanks very much.
lol.... shut down Foxit reader. -that interferes with Quartus - es copy/paste functions. open your documentation in some other pdf reader. (works with x64 Quartus 14.1 build 186 )