That should be a full installer. That is the latest version.
And you had v19i before? or some version of v19?
Normally, a v19 installer will overwrite into the same folder where the last v19 was, unless you changed the defaults, but it wont' overwrite your master0.lic file in that folder.
If you do a search on "master0.lic" on your C drive, nothing comes up anywhere? Note that the 0 in "master0.lic" is a zero, not an "o"