Version 4 update - Now Free!

I have decided to release an update to version 4 (release 52).

This is pretty much the same as the last release, with two changes.

• There was an error message when running alongside version 5, due to both versions using the same storage in the registry and v4 not expecting the values v5 stored.
  
• I have removed the registration restrictions, so v4 is now free.

You can download the files only update here. Alternatively you can download the full install here or the full Runner install here.