ECW For ArcGIS Server Version 10.1 is not checking out licenses after installation, giving the following errors in the “service.log” file in ArcGIS Server:
“Error while starting AppServer. Required port '4 000' already in use”
“ExecGroup-19:err:ERROR 1: ECW GDAL driver could not find valid license”
For “ECW for ArcGIS Server 2013”, the correct license file format is with *.lic extension.
For “ECW for ArcGIS Server 2011 v11.0.2”correct license file format iswith *.elf extension.
3. Please check to see if the Composite ID in the License Admin Tool is the same as given in the license file provided.
After doing all the above steps, if still you are having problem, then please send us the license server log file. That log file should provide some info on what is happening with the server when the problem occurs. The file is called 'erdasnet.log" and is located at c:\programdata\erdas\shared\licensing\ folder. Please attach that file for review. It is best to get the file when the problem actually occurs.