how do i use a script after download

alright im trying to get cool scripts like for example i just downloaded the flax picker and spinner thing but i dont no wat to do form there nd when i ran it it said
line 868: [error] (15549:39):type mismatch
i woulod apreciatte ur help so muhc =)

 

Get SRL rev #9.

 

Which you can get by following the directions on SRL-forums:
http://www.srl-forums.com/forum/ (there's a big title saying "Download SRL here...")