Microsoft Dynamics GP 2015 R2 Launch Problem

Despite my assumptions about hotel Wi-Fi I have been able to download the Microsoft Dynamics GP 2015 R2 installation media. However, I have encountered an issue when trying to launch the client following the install.

I wondered if someone else would be able to verify my findings?

I installed in on my laptop which already has the following installed;

1. Microsoft Dynamics GP 2010 SP3
2. Microsoft Dynamics GP 2013 SP2
3. Microsoft Dynamics GP 2013 R2
4. Microsoft Dynamics GP 2015

GP Utilities appears to run OK, but when I try to launch the desktop client, it tells me I need to launch GP Utilities and ends up in a perpetual loop of me running GP Utilities then the desktop client and so on.

When I installed the software it did ask if I wanted to update the 2015 instance which I declined and installed a named instance of 2015 R2. I am wondering if this is because I have other versions of the client installed?