Okay, this is a stupid problem but yes I made it. When I found installer may keep the history of old files, I tried to delete all my CCZBFaceTool files to erase the installing history. And it was a disaster. Now when I REINSTALLED this plugin, I got NOTHING installed but an ICON image,which is the only thing I forgot t delete. That is fucking stupid I know, but I had done this. And is there any way to correct this mistake? Except buying a new computer. I think ZBFaceTool is not a very cheap product and I still want to use it, it's really convenient.