I am working on building an app. Earlier I have used Xcode 7.1 at that time everything was working fine. Recently I have installed Xcode 8.0 as well and I have both the setups installed into in two different directories Xcode\_7, Xcode\_8 and I renamed the setup files as well. Everything was working fine but lately I am getting the following error while working with Xcode 8. 

**"An internal error occurred. Editing functionality may be limited "** 

and the storyboard view objects are all gone empty like shown in the image but I am able to click on a specific view and still can see their properties defined through attributes inspector but nothing shows up in storyboard still I am able to build the project successfully but while loading it in simulator it says 

**Unable to boot the iOS simulator**

I have followed few tips like reinstalling the Xcode , trashing the derived data from preferences. Nothing helped so far. Please let me know if anyone resolved this issue.

[Storyboard file ViewObjects all gone empty](https://i.stack.imgur.com/GtOrZ.png)

**UPDATE**

I have found the fix with the help of apple forums here [Visit](https://forums.developer.apple.com/message/189283)!.
**Disabling the SIP (System Integrity Protection)** in my iMac which runs on El Capitan solved the issue however not sure disabling it will raise any further errors. :)
['https://Stackoverflow.com/questions/40102726', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/4134597/']
Try This

> 
> Go to Xcode -> Preferences -> Locations -> Derived Data -> click the
>  arrow to open in Finder -> And delete the content of that folder.
> 
> 
> 

[![enter image description here](https://i.stack.imgur.com/0j0EO.png)](https://i.stack.imgur.com/0j0EO.png)

Hope it helps!
Restart your mac, press cmd+R and open in recovery mode.

Open terminal and type command --> csrutil disable

restart mac..

open terminal--> sudo chmod 0777 / private / tmp 

then run your xcode, simulator will work fine :)