Hi Danielle I,ll look into the links problem and see whats up there.
I think the error your seeing on the program is listed in another thread , I,ll look for it after checking the archive
....Back,,, Ok I think your using the links to external sites and thats the reason for those 404 errors, grab what you need here
httpss://archive.winmxworld.com/LeecHammer/
I think the error you noticed is if the winmx version does not match the correct leechhammer version, hope that helps