Cain Problems!! "Unable to open Winpcap driver: The system cannot find the device specified."

Facing problem with Winpcap ?

I used to use Cain long time ago on my Windows 7 PC. 
It was working fine but yesterday I installed the cain again on same windows and found some errors in cain.

When tried to start ARP and Sniffer a message came up
"Unable to open Winpcap driver: The system cannot find the device specified."

I thought may be I haven't restart my PC thats why this messsage is coming because during installation it said that Winpcap will work properly after reboot.

So I rebooted my PC and again the same problem. This time I took a closer look into the message and i found the solution from the message itself.
message clearly said that Unnable to open the driver.

Here are the simple steps you can follow to fix this problem.

Step 1:

Goto configuration 

Step 2:

Select sniffer

Step 3:

Select the right driver. 
(Usually its the driver which is showing the IP of the network which you wanna sniff.)

Thats it.

No need to restart again. It will work. 
If it doesn't work please let me know in the comment.