We get asked this question every now and again... so here is some info.
The official answer is that we (Light Illusion) do not support or guarantee the use of Multiple licenses on the same PC.

However, if you understand how the Windows OS works, it is possible... as you can move/rename installation folders.

This means you can run multiple LightSpace licenses, such as a paid for license, and the free 'DPS' license.
Or a 'LUTs+' license with a 'LTE' license, etc.

The process is to install and 'license' the first LightSpace version, and copy and rename the default installation folder, as well as making a new desktop shortcut to the lightspace.exe file in the new folder.

Next, uninstall LightSpace, which will remove the initial installation, but leave the new 'copied/renamed' LightSpace folder and shortcut to the LightSpace .exe.

Re-install a new LightSpace installation with the second license, which will create a new shortcut to the default installation folder.

The two shortcuts will now run the two separate LightSpace license versions.
But, as said, we cannot 'support' such multiple installation...

Steve