try this one. go to control panel - user - then create new account. after that log off ur previews account ang go to your new account. if u have any important files from your previous account copy it/ transfer it in your new account. after that try to install again the indigo renderer. there you hav...

i already tried it, but nothings happened.
is there any other way to bring back my render setting?

@studiouno: i have also the same problem. can u pls. help me how to do it. my render setting is gone when i update my indigo 2.2.12 version to 2.4 version.