I have recently installed (network) SW2007 on a new machine with Windows 7 and all WAS fine. Used for a couple of days.  I then installed a sp upgrade from 0.0 to 2.1 and now I am getting the following error message when starting SW,

"Your limited life version of Solidworks has expired"

OK is only option and then Solidworks closes.

Then, I tried to install another sp from 2.1 to 4.0 but get the following message (not sure why I didn't get this on the first upgrade).

"The MSI file selected for installation does not match the current operating system.

Any suggestions on the limited life version?  Also, not currently on subscription service so no access to get latest sp's, if one is available, for Windows 7.

Thanks, Tim...