Solved bad_pool_caller please help

please help when i shutdown my pc every time i have an error when i login to desktop called bad_pool_caller
i attached dump file
my operation system is windows 8

Welcome
The more BSODs that you get the better the chance that we can determine the cause. You have given us one. That being said, replace this driver or uninstall the appropriate software

Hssdrv.sys file description

Productname:
Hotspot Shield® Routing Driver

Description:
Hotspot Shield Routing Driver

Company:
AnchorFree Inc.