Citrix Vuser issue

Hi Team,

I'm involved in performance testing Citrix application through Loadrunner.

My system configuration :

Citrix plugin - 12.0

LR version - 11

I am able to record my scripts with not much difficulty and it is replayed well good in VuGen too. But when I run my scripts thru Controller, my Vusers get failed with a "Protocol Driver Error" or "ICA File not found error". I've checked all source of info to solve this but no luck. Please could you help me guys?

Thanks,

Antony