Please read through this thread Some very important steps if you are a NEW FORUM USER.... and then read the following answer to this question located in the FAQ space on the forum.
I got an error message when I tried to open a SW file.
I suggest contacting your local Solidworks support representative.
Where you able to get ahold of tech support?
99% chance that they say the network had a failure.
did you get an error when saving that the file was corrupt?
Retrieving data ...