I tried to update my solidworks 2013 SP0 it offers me an SP05 version and when I launch the installation I get this message:
The installation files could not be downloaded because: Unable to run the SolidWorks 2013 x64 Edition SP05 Installation Manager because the application was not properly extracted. If the problem persists, contact your local technical support. If the problem persists, a proxy server may be blocking automatic downloads. Choose the option to manually upload files instead.
For more information on upload errors, visit the Customer Portal.
Like PL but with less patience, now I don't ask myself the question anymore: connection to the SW customer portal and download of the 4GB, finally it's not longer.
I run it in the evening and do my install the next morning.