ios - Parse.com and Facebook login, runs infinite loop -

i updated both parse , facebook ios sdks latest versions, , when try login using facebook app crashes, , debugger can see calling 3-4 methods in endless loop.

my login code looks this:

- (void)opensession {     uiviewcontroller *topviewcontroller = self.window.rootviewcontroller;     nsarray *permissions = [nsarray arraywithobjects:@"user_likes", @"friends_likes", nil];      // login pfuser using facebook     [pffacebookutils loginwithpermissions:permissions block:^(pfuser *user, nserror *error) {         if (!user) {             if (!error) {                 nslog(@"uh oh. user cancelled facebook login.");             } else {                 nslog(@"uh oh. error occurred: %@", error);             }         } else if (user.isnew) {             nslog(@"user facebook signed , logged in!");              if ([[topviewcontroller presentedviewcontroller] iskindofclass:[paloginviewcontroller class]]) {                 [topviewcontroller dismissviewcontrolleranimated:yes completion:nil];             }         } else {             nslog(@"user facebook logged in!");             if ([[topviewcontroller presentedviewcontroller] iskindofclass:[paloginviewcontroller class]]) {                 [topviewcontroller dismissviewcontrolleranimated:yes completion:nil];             }         }     }]; } 

the error occurs when loginwithpermissions called. crashes xcode , debugger showing awful lot of calls fb login methods - thousands actually:

stack trace http://f.cl.ly/items/3z270o3l1s173z3o0v3e/screen%20shot%202013-04-20%20at%2010.25.51%20am.png

what wrong?

this issue reported bug on facebook: https://developers.facebook.com/bugs/188127071335876?browse=search_5176d24c698df3761093726

it has been fixed, , can confirm logging in works - sandbox enabled.