Could not verify downloaded file

hi there
I have aproblem … after downloading a file I get the msg ” could not verify downloaded file” so when Im trying to extrect the files doesnt wrk… but its 100% downloaded…
Answer #1
What are you downloading? Are you using a Download Manager?
Answer #2
yes …rapid share download manager…why..?
Answer #3
Because the files seem to be corrupted, and sometimes that happens. It happens with every single file you download? Have you tried using another download manager?
Answer #4
hmmm I use to use flasget but I know of a conflict with rapidshare so stop using that …never tryed any other download menager… funny thing is downloads the whole file 100% of it but when it comes to extract than I get the corrupt file msg…
Answer #5
try to redownload the file
Answer #6
Use IDM or JDownloader, rest are waste of time.