ios - Core data crash add object to relation -


i have problem core data crashing app. happens when i'm trying add object relationship.

    homuser *artist = [homuser getuserwithdictionary:artistdict incontext:context];     [self addmartistsobject:artist];

* terminating app due uncaught exception 'nsrangeexception', reason: '* -[__nsarraym objectatindex:]: index 25 beyond bounds [0 .. 24]'

the number 25 represents how many entities in core data model. call stack. goes far framework cannot debug lot. didn't happened since always. i've checked , rechecked core data model. have ideea can wrong?

0   corefoundation                      0x02c0e02e __exceptionpreprocess + 206 1   libobjc.a.dylib                     0x02a33e7e objc_exception_throw + 44 2   corefoundation                      0x02bb00b4 -[__nsarraym objectatindex:] + 196 3   coredata                            0x0122ee2a -[nsmanagedobject(_nsinternalmethods) _includeobject:intopropertywithkey:andindex:] + 90 4   coredata                            0x0122ed0e -[nsmanagedobject(_nsinternalmethods) _maintaininverserelationship:forproperty:olddestination:newdestination:] + 590 5   coredata                            0x0122fcb1 -[nsmanagedobject(_nsinternalmethods) _maintaininverserelationship:forproperty:forchange:onset:] + 273 6   coredata                            0x0122e956 -[nsmanagedobject(_nsinternalmethods) _didchangevalue:forrelationship:named:withinverse:] + 1878 7   coredata                            0x0122e1f0 -[nsmanagedobjectcontext observevalueforkeypath:ofobject:change:context:] + 400 8   foundation                          0x021a6ce7 nskeyvaluenotifyobserver + 357 9   foundation                          0x021c03f4 nskeyvaluedidchange + 456 10  foundation                          0x022239c3 -[nsobject(nskeyvalueobservernotification) didchangevalueforkey:withsetmutation:usingobjects:] + 131 11  coredata                            0x0122fb58 _pf_managedobject_didchangevalueforkeywithsetmutation + 72 12  coredata                            0x012a77e6 _sharedimpl_addobjecttoset_core + 310 13  ???                                 0x0bcf1379 0x0 + 198120313 14  product name                        0x000acb39 -[homevent initwithtitle:withartist:withplace:withwhen:withdescription:andwithoptionslink:andwithlinkwith:andwithfriends:insertintocontext:] + 1161 15  product name                        0x002315a3 -[homaddeventvcviewcontroller postpressed:] + 8771 16  libobjc.a.dylib                     0x02a47705 -[nsobject performselector:withobject:withobject:] + 77 17  uikit                               0x016b7920 -[uiapplication sendaction:to:from:forevent:] + 96 18  uikit                               0x016b78b8 -[uiapplication sendaction:totarget:fromsender:forevent:] + 61 19  uikit                               0x01778671 -[uicontrol sendaction:to:forevent:] + 66 20  uikit                               0x01778bcf -[uicontrol(internal) _sendactionsforevents:withevent:] + 578 21  uikit                               0x01777d38 -[uicontrol touchesended:withevent:] + 546 22  uikit                               0x0197b213 _uigesturerecognizerupdate + 7407 23  corefoundation                      0x02bd6afe __cfrunloop_is_calling_out_to_an_observer_callback_function__ + 30 24  corefoundation                      0x02bd6a3d __cfrunloopdoobservers + 381 25  corefoundation                      0x02bb47c2 __cfrunlooprun + 1106 26  corefoundation                      0x02bb3f44 cfrunlooprunspecific + 276 27  corefoundation                      0x02bb3e1b cfrunloopruninmode + 123 28  graphicsservices                    0x038247e3 gseventrunmodal + 88 29  graphicsservices                    0x03824668 gseventrun + 104 30  uikit                               0x016b465c uiapplicationmain + 1211


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