When you want to move BASCOM to a new PC. You have a number of options.

The most simple is to download a full setup file from http://register.mcselec.com

Then, after the installation, copy the license file bscavrL.DLL to the bascom-avr application directory of the new PC.

Or let setup.exe do this for you. When you put the license file in the same directory as setup.exe, setup will copy/install the file for you.