App installation failed: illegal Bundle identifier

[espilsad]

When I try to install it everything builds and signs perfectly but upon installing (I think at the last step) I get the error message:

App installation failed: This app contains an app extension with an illegal bundle identifier. App extension bundle identifiers must have a prefix consisting of their containing application's bundle identifier followed by a '.'.

[peter961785]

Try com.somethingrandom.appname For the bundle identifier replace somethingrandom & appname