Installation on Windows Vista

[Txbull816]

Hi- I had an older version installed on my system running Windows Vista. I went to use it last week and it asked me to update to version 5.5.14 I think. Well I did but it actually put it on my computer and I wanted it on my flash drive which it didn't give me that option. I uninstalled everything I had on drive and pc. Now when I try to reinstall newest version it gets 1/2 way through and an error message pops up. It says file is corrupted, download and reinstall. Is there something wrong with this download and is there somewhere else to download correct program I need? Thanks for your help.