If i stop the app with the home button an start it again i have no problems as long i do not start the wikitude part in the app.
If i start the wikitude part in my app and stop it (leave the view) again and press the home button and start the app again i get a crash as soon the app comes back to foreground. i get this error message:
2013-02-24 16:51:59.322 Bildungsapp -: unrecognized selector sent to instance 0x1e98ad10 2013-02-24 16:51:59.325 Bildungsapp *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-: unrecognized selector sent to instance 0x1e98ad10' *** First throw call stack: (0x33bcd2a3 0x34a8b97f 0x33bd0e07 0x33bcf531 0x33b26f68 0x36bad119 0x33ba26b1 0x33ba1d85 0x33ba0fdd 0x33b13ebd 0x33b729bb 0x36bacef7 0x36206311 0x362061d8) libc++abi.dylib: terminate called throwing an exception
i do following if i leave the architectViewController: