SSAO using nvidia inspector not working on 2k14?

it worked in 2k13.i used diablo 3 last year and it worked.it seems it doesnt work this year though.what can i do to make it work?

Yep. Sadly Nvidia drivers since v.331 broke it up.

Last working version is 327…
http://www.geforce.com/drivers/results/66884

will i have problems if i use 327?

Nope you wont have problems with v.327. The SSAO implementation in v.331 changed, only in AO Quality = High can you have noticeable results in game. Low - Medium Settings are only noticeable in camera cuts and replays.