Just because someone chooses to call themselves greenpoison on Twitter, does NOT mean they are officially linked to the Chronic Dev team. Almost all the twitter handles that sound like a jailbreak have nothing to do with any official jailbreak developer (including redsnow ones too).
Nobody has tried softra1n because it is a scam. If you have been round long enough then you should know that. ANY paid jailbreak is a scam. Period. But hey, if you really don't believe us, go ahead and purchase it and see for yourself that it is a complete waste of money.
If you are having problems, then please post the precise detailed and see if someone can help you. Don't just say "I get some error". Pay attention to it and tell us the error code or what it says. The details are what help folks know what the error is and providing them may help you resolve them!
It sounds to me like your problem is related to the PC, possibly USB / cable related, or having something such as anti-virus / malware / firewall related running which is interrupting the process.