If this file is part of a ZIP format backup set, insert the last disk of the backup set and try again. Please press F1 for help. Some of your files are now empty, having a zero byte size. If your system displays all the above symptoms, the system probably has the worm called Worm.
Worms are similar to computer viruses.
For more about this virus and how to get rid of it, see How to Remove Worm. Instead, see the above link for how to get rid of the worm without an antivirus program. Installing an antivirus program, or saving any files to the hard disk, can overwrite files the worm has deleted, making those files unrecoverable. Make sure the worm is fully removed from your computer. If the computer is on a network, either disconnect it from the network, or make sure the worm is fully removed from any computers that are attached to the network.