I was using Smart FTP (I don't know what version) and it said my build was about to expire, so I downloaded a newer build, using the link on the message. After downloading yesterday, I was able to use the software without a problem. Today, when I went to go use it, it says that "The source installation package for the product SmartFTP client is out of sync with the client package. Try the installation again using a valid copy of the installation package 'SmartFTP.msi'." I have tried re-downloading the software, but it doesn't help.