Errors always appear after you either have made the request too many times and you need a proxy, or you have too many passwords set in the cracker (make it 5 to be safe)
There were crackers with inbuilt proxy functionality but I can't remember if ToxLP's has it and I'm on my phone.
You can try using Hotspot Shield(?) which I heard is good, or if the cracker does have inbuilt proxy functionality, proxynova.com is where to go I think.
Having just written this, I realise that you're using version 1.2 and from memory that version is patched
I might be being stupid though, I would double check but I'm on my phone