KM iViews doesn't load after changing Cache property

Hello,

I have few KM iViews which by default are being created with Isolation mode=URL and Cache=None. I tried to change the Cache property to "Shared" in order to save some resources but once I did that the content of the iView didn't load. I tried changing the Cache to "Session" and "User" and I got the same result. Only after changing the Cache property back to "None" the content appeared again.

Any idea why this happen.

Roy