CoreAnimation: ignoring exception: *** -[NSPlaceholderString initWithString:]: nil argument

Question

This code is causing the error:

- (NSString *)cachedTwitterOAuthDataForUsername:(NSString *)username
{
    NSString *cache = [NSString stringWithString:[settings objectForKey:@"twitterCache"]];
    if (cache.length > 0)
    {
        twitterLoginShown = YES;
        return cache;       
    }
    return @" ";
}

I can't even step through each line in this block of code for some reason. I'm not exactly sure what the error is asking.

Answer 1

The error tells that [settings objectForKey:@"twitterCache"] returns nil. Check if settings contains a value for the key @"twitterCache".