sv.exe - that thing is a file you extract from the zip, is that right?
it could be that it depends on a DLL that is not present on Windows XP, or at least not on the Windows XP box you're trying it on.
What happens if you just unzip the SFX, rather than execute it? (you can rename the .exe to a .zip, and it should open as a normal zip file).
Once you unzip the sv.exe, can you run it? If not, then what is the error? If it is a dependency issue, one way to track it down is to download the free dependency walker tool , and install it on Windows XP. Start depends.exe, then load the
sv.exe file into it. This will show you what libraries are missing in the dependency chain.
Another possibility is that the sv.exe file is being run before it is "ready" - it could be locked by an anti-virus program running on the Windows XP box. And for some reason the other machines don't have this problem - either they have faster
CPUs and disks that don't present the problem, or they have a different anti-virus, or something like that.
I'm just guessing here - you'll have to do some more work to diagnose it.