There is no need to delete a previous version of Omniscope - downloading a new version will replace the old one.

Note that if you have already installed a previous version of Omniscope on your machine, it will have been in one of two different ways;

1.) for ALL users/accounts on the machine, or

2.) for the CURRENT user account only...i.e. the account you are logged into when you install

You should install updated versions the same way as you did the previous versions in order to replace the older version.

If you have in the past inadvertently installed Omniscope both ways, you will see two installations listed under Programs in the Control Panel. If you unexpectedly see two different Omniscopes listed, just un-install the oldest one.