blur gallery missing from my CS6, how can i restore it? Thanks

No Blur Gallery menu item in Photoshop CS6, just the three top entries in the Filter>Blur menu

open a "Blur Gallery" window.

Try to reset the preferences of Photoshop using the steps described here: 

Preferences in Photoshop (adobe.com) 

Please backup your settings before resetting the preferences. You can check: 

Migrate presets, actions, and settings (adobe.com) 

If this doesn't help we need more information about your environment. Please consider including the following questions: 

• Adobe product and version number 
• Operating system and version number 
• The full text of any error message (s) 
• What you were doing when the problem occurred 
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Hello!

I am speaking from memory there, and possibly other people will correct me, but I am not sure the blur gallery was around when CS6 was released. Is the issue new and did you have it previously, or is this something you never tried?
Anyhow, if it was there, it should be within "filters"
(See my screenshot)