Context menu scan dosent work?

When I right click on a folder to scan with comodo antivirus nothing happens
it is unresponsive. I Using COMODO Internet Security 6.3.301250.2972

What volume (size) of the folder, what you want to scan?
If it is more than 40 Mb (by default), it is necessary to adjust in an antivirus.

Its happens on all folder scans from context menu?
I Forget to mention Im Using Win7 Home Premium x64 SP1

If to establish for example 100 Mb, it is possible to scan all folders and files up to 100 Mb in size.
I t is recommended to establish values (size) only for manual scanning.
In real time to leave scanning without changes. (by default).

You can create the profile for manual scanning.
Look the help reference.