A user on the CW forum found out, that winrar would give him errors with SFP, and winzip would not. I sugest trying EnZip, if you want a good, free, not spying, adfree (un)zipper (does not work on jeans though ), I have not installed SFP, so I can not guarantie for succes, I just like the software (I have used it for about a year now).
Immanuel
Information for new readers: A forum member named Braincell is known for spreading lies and malicious information without even knowing the basics of, what he is talking about. If noone responds to him, it is because he is ignored.