You might try asking this question in the Administration forum, as that is the best spot to get answers about installation issues.
Rick try the solution given in SolidWorks Knowledge Base Solution Id: S-062141 if that helps you (not sure if you've access to that area I'm posting the solution below)
1. Open a command prompt (Start > Run > type cmd and hit enter)
2. Type 'cd c:\program files\solidworks corp\solidworks\setup\i386' to change to the <SolidWorks install directory>\setup\i386 folder If SolidWorks is not installed in the default location update the path as necessary
3. Type swlicservinst.exe -swip swx and hit enter
4. Type swinstactsvc.exe -swip swx and hit enter
5. Start SolidWorks.
We have one user getting this error this morning. Would it have something to do with the license server? We moved the license manager to a newer server and had everyone run a batch command to update their machines to search for the right server. If the user didn't run the batch command, would the installation manager have problems updating to 14?