Undefined Variable

I will be so happy if anyone here can lead me in finding the solution for this undefined variable thing in my product/category. i don't know what i have done but i hope someone can help me on this.

Notice: Undefined variable: fast_shop in /home/bazaarph/public_html/mytindahan.net/stores/catalog/view/theme/default/template/product/category.tpl on line 60

I am using Fast Shop Everywhere of gauravlanjekar. i contacted him but no reply.

Undefined variable mean that the "fast_shop" is not mentioned on controller/product/category.php

Since this is custom mod, check the documentation with it. May be you miss one or two thing related to category.php

thanks a lot qahar...