Crash with PTNSJSONParser objectFromJSONString

[theprojectabot]

Hi there,
We are getting a high number of crashes in our app from a pusher call

13 CoreFoundation                 0x1847f5848 -[NSException initWithCoder:] + 118
14 Foundation                     0x18513dcdc +[NSJSONSerialization JSONObjectWithData:options:error:] + 76
15 Pusher                         0x1004622a4 -[PTNSJSONParser objectFromJSONString:] + 72
16 Pusher                         0x1004668d4 -[PTPusherPresenceChannel subscribeWithAuthorization:] + 184
17 Pusher                         0x100463194 __31-[PTPusher subscribeToChannel:]_block_invoke + 284
18 Pusher                         0x1004660b8 __57-[PTPusherPrivateChannel authorizeWithCompletionHandler:]_block_invoke + 156

Any thoughts? Its seems to be crashing in the Pusher parser after a presence subscribe with auth call....

[theprojectabot]

using: - libPusher (1.6.1):
- libPusher/Core (= 1.6.1)

[lukeredpath]

What JSON is your server returning on authorisation?