Problems with installation

hello,

iv downloaded the education version installer from the site.

after i entered the serial i chose "download and install" but it says:

The downloader could not be started due to an internal error. Try downloading manually.

then i downloaded all the files that was suggested 10 files:

and put it at the directory iv been told.

after that i click continiue but it says:

Some manual downloads could not be verified or extracted. They may need to be downloaded again. Use the built-in Downloader or download the remaining files manually:

i downloaded it several times it doesnt help, and i cant continiue the installation.

what should i do?

thanx for helping me.

SolidworksAdministration