It maybe very difficult to troubleshoot the problem, The simplest remedy as suggested by Whoami would be to reinstall the software. You could do it yourself by following the tutorial at http://www.iclarified.com/entry/index.php?enid=746

If you are not comfortable doing this yourself then you could contact Dandy or the iPhoneunlocker on QL. If you are not able to get them I could do it for you over the weekend.