SMKLastFMClient getSession not working

[1b0t]

There seems to be something wrong with the signature generation.

I get the following response with the generated URL:
{"error":13,"message":"Invalid method signature supplied","links":[]}

Also:
in line 96 SMKLastFMClient.m the base URL is not working for some reason i changed the line to:
NSString *URLString = [NSString stringWithFormat:@"http://www.last.fm/api/auth/?api_key=%@&token=%@", self.APIKey, token];
(this works fine)