_BSMachError XCode 7 Beta

Question

I am getting the following error when I am running my code in Xcode7 with Swift2, after presenting a view controller through a push segue:

_BSMachError: (os/kern) invalid capability (20) _BSMachError: (os/kern) invalid name (15) 

The other SO articles had no resolution, does anyone know about this issue?

Answer 1

Although this problem seems to persist as a bug and will likely be fixed, it stems from the new App Transport Security that has been implemented in iOS 9.

If your application pulls data from a web server, in order to populate the View Controller that you will be presenting, you can resolve these errors by verifying/granting access to the particular site(s) you're pulling from.

In order to address this you will add the following to your App's .plist file:

• You may want to alter your ATS Exception Dictionary to fit your needs

  <key>NSAppTransportSecurity</key> <dict>     <key>NSExceptionDomains</key>     <dict>         <key>testdomain.com</key>         <dict>             <key>NSIncludesSubdomains</key>             <false/>             <key>NSExceptionAllowsInsecureHTTPLoads</key>             <false/>             <key>NSExceptionRequiresForwardSecrecy</key>             <true/>             <key>NSExceptionMinimumTLSVersion</key>             <string>TLSv1.2</string>             <key>NSThirdPartyExceptionAllowsInsecureHTTPLoads</key>             <false/>             <key>NSThirdPartyExceptionRequiresForwardSecrecy</key>             <true/>             <key>NSThirdPartyExceptionMinimumTLSVersion</key>             <string>TLSv1.2</string>             <key>NSRequiresCertificateTransparency</key>             <false/>         </dict>     </dict> </dict> 

More details to this solution can be found here or here The Apple Documentation for App Transport Security is worth reading too.

Answer 2

I had the same two error messages. In my case, the errors were appearing when I called [[UIApplication sharedApplication] openURL:url] after the user selected a button in an open UIAlertController. I assumed the alert was trying to close at the same time I was trying to open the URL. So, I introduced a slight delay and the error message went away.

dispatch_after(0.2, dispatch_get_main_queue(), ^{     [[UIApplication sharedApplication] openURL:url]; }); 

Not sure if this helps with your particular problem, but I thought it might be helpful to share.