I do installed this features,but when i was trying to actiaved it. It show me a caution that said "This scripts may defective or you may not have the proper privileges to run script" can anyone solve this problem for me? Thanks.

The script likely has a syntax error preventing it from running correctly. Double check your code

Maybe plus should report back to a server with the error that occured and the information about the script so that a script developer can be notified (or find out for themselves) when errors occur and can do something about it quicker.  Just a small idea for the next version.