Update Trados 2014 won't install.

Hello.

I can't install the update for Trados 2014.Downloaded through installer & through http://kb.sdl.com/#tab:homeTab:crumb:7:artId:5375

Installer hangs after about 40 seconds.

I get a blank pop-up with only "1:1712" in it.

Any suggestions. Many thanks in advance.