Unable to open newly installed free standing Lightroom not part of CC

Question

I have an Adobe CC photography membership and I've installed PS and LR on two computers from the membership. I also purchased a version of Lightroom 6 (not part of the membership) to install on a third computer for which I received a serial number. However, I am not able to open the program because I get a message stating that my CC software is already installed on two computers. This version of Lightroom that I purchased separately from CC subscription hasn't been unstalled on any computer! It's a free standing version. Yet, I can't install it because I also have a CC membership. It's ridiculous. I had no problem installing a free standing version of Lightroom 5 on this same computer (also with a separate serial number). Why can't I get Adobe to recognize the difference in the two types of Lightrooom...the one from CC subscription and the other having nothing to do with my CC subscription?
Thanks,
Chick

Answer 1

Lightroom CC was NEVER installed on this computer. In fact NO CC programs were ever installed on this particular computer except the Adobe CC application itself (Adobe installed it automatically when I plugged in my User ID for updating one of the other (NON-CC) Adobe programs on the computer (CS5 suite). A perpetually licensed version of Lightroom 5 was also installed on this computer (and I had no problem installing that).
I eventually created a new Adobe ID and password and retried to install it using that ID and password but the installer said I needed an Adobe CC membership to continue the installation. So, I contacted Adobe and after two hours with an online support person (Live Chat), which was getting me nowhere, I decided to use a new ID but install as a trial.During the install, I made sure no adobe apps were running and deleted the preference file for the CC application (which also wasn't running). The program finally installed as a trial version. I then closed the program, restarted, and a screen came up telling me I had 30 days left on the trial. There was also an option to license the software on that screen. I chose the latter and....another screen came up asking for a serial number, which I provided. And now the program is installed and is associated with a different Adobe ID and password from the programs I have on two other computesr that have CC applications installed.
That's the solution I came up with. It worked but installation should have gone much smoother, as it did last year when I installed the perpetually licensed version of Lightroom which was associated with the same user ID and password as I used for the CC subscription.