Citrix Presentation server cannot contact citrix license server

Recently when logging onto the presentation server or opening a citrix aplication you get the error message 'Citrix presentation server cannot contact the license server'

the presentation and license servers are differnt servers.

on the license server, 2 of 3 citrix services are running.

citrix License Management console is started
Citrix Licensing WMI is started

Attempting to start CitrixLicensing results in this message - the citrixlicesnsing service started then stopped, some services do this because they have no work to do.

cannot telnet to port 27000 on the license server which I belive is the port citrix uses for its licenses.

Below is the debug log from the license server.

Any help greatly appreciated.

11:19:41 (lmgrd) -----------------------------------------------
11:19:41 (lmgrd)   Please Note:
11:19:41 (lmgrd)
11:19:41 (lmgrd)   This log is intended for debug purposes only.
11:19:41 (lmgrd)   In order to capture accurate license
11:19:41 (lmgrd)   usage data into an organized repository,
11:19:41 (lmgrd)   please enable report logging. Use Macrovision's
11:19:41 (lmgrd)   software license administration  solution,
11:19:41 (lmgrd)   FLEXnet Manager, to  readily gain visibility
11:19:41 (lmgrd)   into license usage data and to create
11:19:41 (lmgrd)   insightful reports on critical information like
11:19:41 (lmgrd)   license availability and usage. FLEXnet Manager
11:19:41 (lmgrd)   can be fully automated to run these reports on
11:19:41 (lmgrd)   schedule and can be used to track license
11:19:41 (lmgrd)   servers and usage across a heterogeneous
11:19:41 (lmgrd)   network of servers including Windows NT, Linux
11:19:41 (lmgrd)   and UNIX. Contact Macrovision at
11:19:41 (lmgrd)   www.macrovision.com for more details on how to
11:19:41 (lmgrd)   obtain an evaluation copy of FLEXnet Manager
11:19:41 (lmgrd)   for your enterprise.
11:19:41 (lmgrd)
11:19:41 (lmgrd) -----------------------------------------------
11:19:41 (lmgrd)
11:19:41 (lmgrd)
11:19:41 (lmgrd) pid 1012
11:19:41 (lmgrd) lmdown requests disabled
11:19:41 (lmgrd) ERROR: license files have conflicting port numbers
11:19:41 (lmgrd)    27000 and -1
11:19:41 (lmgrd)     Please edit the license files so the port numbers
11:19:41 (lmgrd)     on the SERVER line are identical.
11:19:41 (lmgrd)     License files include: C:\Program Files\Citrix\Licensing\MyFiles\citrix_startup.lic C:\Program Files\Citrix\Licensing\MyFiles\license_20090227111026.lic
11:19:41 (lmgrd) Exiting