what...is your quest? (licensing problem)

  1. What happened
    I tried to open the free version of unity 4.2.1 I just downloaded but it says “Information
    There was a problem communicating with the license server. Would you like to do a manual activation?”

I save the license to a file “Unity_v4.2.1f4” then try to load it. It does not appear until I switch from ulf to all files. It appears as “Unity_v4.2.1f4.alf” and when I try load the file a box appears saying “Information
License file was not loaded.”

I am new at this so I can appreciate how unimportant this problem is, but i would like to get started. Thank you for your time.

See Unity - Manual: Manual license activation.