Apparently, the file is not transmited correctly from one computer to the other.
How are they connected? Whired or whireless? What kind of router do you use?
Make sure that the connection is good. Check for damaged whires and cables and replace if needed.
Make absolutely sure that both computers are virus free. Install some good AV on both and do a full scan.
Some good, and free, ones: AVG, Avast, Microsoft Security Essentials. Those 3 are TOP rated.
(set only one to run in the background, if more than one is installed, the other(s) must be set to only work when asked)
Also, make sure that you are spyware and addware free.
Install Spybot Search & Destroy and perform a full scan.
Install AddAware and do a full scan.
Those search for spywares and addwares and suppress them.
Electro
May 2011
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix desktop pcs.