I don't get an error.
Here's where I am at. I have an iPhone with nothing on it. If I jailbreak it through redsnow, I get it to boot, and go through the initial setup, but with no Cydia, and I can't use the built in Mail app, then if I try 'Just Boot' from Redsnow I get a missing shsh message.
If I restore through iTunes, I get a message that the cannot activate my iPhone and to contact customer service.