FLEXnet error -90,xxx "Future license file format or misspelling in license file."

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

After installing the license file via the license wizard the following error message appears when attempting to start ENVI or IDL:

% LICENSE MANAGER: Future license file format or misspelling in license file.
The file was issued for a later version of FLEXnet Licensing than this program understands.
Feature: idl
License text: SUN HOSTID=001234ab5c56 ck=18
License path: /usr/local/exelis/idl82/../license/license.dat:
/usr/local/exelis/license/*.lic
FLEXnet Licensing error:-90,313

This error typically is the result of having extra carriage returns in the license file. This can be avoided by making sure that the following strings all begin on a left justified line:
#
SERVER
DAEMON
INCREMENT

With regard to INCREMENT lines, these can get wrapped on the end of the preceding INCREMENT line causing it to be omitted. If correcting the above lines, with a plain text editor, still produces the error it indicates further corruption of the license file and warrants having a new license sent.

This last reason is rather unusual and is the result of using back slashes ( \ ) in the site name during the creation of the license file. Since the licensing tool sees these as actual line return characters it does so and results in a failure to read the license file correctly. Note the examples below:

Incorrect vendor string( Note back slashes)
VENDOR_STRING=123456-7MYCO\DEPT\SUN HOSTID=001234ab5c56 \

Corrected vendor string( Note forward slashes)
VENDOR_STRING=123456-7MYCO/DEPT/SUN HOSTID=001234ab5c56 \