The file is most likely corrupt because it wasn't completely downloaded....connection interuptions along the way are the most common cause.
I would recommend using one of the download managers available free online, and try again.
[one such example... http://www.freedownloadmanager.org/download.htm]
Design Manager Streetscape Limited
Solid Edge ST10 [MP0] Classic [x2 seats]
Be aware that Siemens has changed a policy on download managers and now only supports "GetRight" a paid product and "DownThemAll" a FireFox only free product. If you use another download manager and it misbehaves with too many connection attempts, you may get blocked.