Xcode 8 error denied by service delegate (SBMainWorkspace)

xcodexcode10xcode8

Trying to run a build on simulator and I get this error:

The request to open "com.companyname.appname" failed.

The request was denied by service delegate (SBMainWorkspace) for
reason: Security ("Entitlement
"com.apple.frontboard.debugapplications" required to launch
applications for debugging").

This was not there when using the GM of Xcode 8, but started soon as I downloaded it again form the mac app store.
Google is no help neither is the Apple developers forum.

Any help or suggestions?

Best Answer

Quitting the simulator and relaunching fixed this for me.