Issues with calling oauth/access_token for some user




So i’m making a standard call on iOS to get access_token for users.

NSDictionary *step2Params = [[NSMutableDictionary alloc] init];
[step2Params setValue:@“mykeyvalue” forKey:@“x_reverse_auth_target”];
[step2Params setValue:S forKey:@“x_reverse_auth_parameters”];

NSURL *url2 = [NSURL URLWithString:@""];
SLRequest *stepTwoRequest =
[SLRequest requestForServiceType:SLServiceTypeTwitter requestMethod:SLRequestMethodPOST URL:url2 parameters:step2Params];

[stepTwoRequest setAccount:account];

// TFLog(@“About to send twitter oAuthRequest step2. with url:%@, params: %@”, url2, step2Params);

// execute the request
[stepTwoRequest performRequestWithHandler......

For me (jim_me) it works fine and get back a valid response from performRequestWithHandler, but for some users I get the following response:

<?xml version="1.0" encoding="UTF-8"?>Error processing your OAuth request: invalid signature or token

as a reply after calling performRequestWithHandler

Why is this?