Does anybody use clang complete for vim?

I install clang complete on my lab machine. It is ok.
But when i copy clang files to plugin of my laptop. It is not working. It gives the following information.
User defined completion (^U^N^P) Pattern not found

Qingpeng, please ask clang on, would be more
suitable, thank you!

(I have no idea about vim...Takumi)