FLEXnet error: -13,xxx "Can't initialize: No SERVER lines in license file"

THIS INFORMATION ONLY PERTAINS TO SOFTWARE VERSIONS IDL 8.5, ENVI 5.3 AND PRIOR

After installing the permanent or activated license information via the license wizard, a form of the following error message appears when starting ENVI or IDL:

% License Manager: Can't initialize: No SERVER lines in license file.
License path: /usr/local/exelis/license/license.dat:
FLEXnet Licensing error:-13,66

• This can be caused by a corruption of the license format. If you open the license file and see a SERVER line present, then try regenerating the license and sending a new copy.
• If this occurs on a Unix based operating system it could be that the license was built for a Windows node-locked license which does not have SERVER lines. If that is the case the license just needs to be rebuilt in the correct format.
  
  Note: 'Laptop style' licenses do not have server lines and do not need a license manager.

• Check the 'license.dat' file to see if the USE_SERVER line is empty. There may also be a missing 'hostname' in the license file.
• Another possible reason is that the license manager may be running. This is unnecessary if the license isn't server based (such as a node-locked license).