Not able to download the SDK for iControl

I am trying to download iControl-11.1.0 SDK from https://devcentral.f5.com/wiki/icontrol.f5downloads.ashx In one machine file is getting downloaded but if I try to open it its giving following error "! C:\Documents and Settings\tendulsu.IGATECORP\Local Settings\Temp\iControl-11.1.0-1.zip: Unexpected end of archive

In another machine I am getting following error if I try to save it C:\Users\stendulk\AppData\Local\Temp\YGtZDrfN.zip.part could not be saved, because the source file could not be read.

Can somebody help me with this?