After installing the license key, you may restore and start PARGE, ATCOR, or MODO. In the Help Menu there is a function which displays your license information. The same may also be printed by the function lic_show after PARGE or ATCOR is restored. If you have an IDL license, you can check if the correct license key is found by the command: IDL> print,file_which('rese_license.pro'); this will also help to find multiple license key files on the same installation. A
debugging programm is available for download which displays all necessary information if things are getting nasty.