System Generator licensing error

Hi,

I am new to Matlab as well as System Generator .

I installed xilinx 13.4 design edition and configured it with matlab 12b

Now as soon as I design a model and press Generate on Xilinx system generator Token I get the following error -

( I already tried whatever mentioned below with no success :( .. )

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ERROR: A license checkout has failed for System Generator for DSP (SysGen).

Please launch Xilinx License Configuration Manager (xlcm) program to make sure that a valid license exists and it can be found by the program.
In order to set XILINXD_LICENSE_FILE environment variable correctly do the following.
1. Close the design and exit MATLAB.
2. Set environment variable, XILINXD_LICENSE_FILE, to point to the valid license file or the license server.
3. Relaunch MATLAB and start System Generator process.

------------------- A message from the license manager --------------
INFO:Security:71 - If a license for part 'xc6vlx240t' is available, it will be possible to use 'SysGen_TDP' instead of 'SysGen'.
INFO:Security:60 - The XILINXD_LICENSE_FILE environment variable is set to 'D:\Xilinx\13.4\ISE_DS\common\Xilinx.lic'.
INFO:Security:62 - The LM_LICENSE_FILE environment variable is set to 'C:/modeltech_6.4c/LICENSE.TXT;'.
INFO:Security:68 - For more information or for assistance in obtaining 
a license, please run the Xilinx License Configuration Manager
(xlcm or "Manage Xilinx Licenses".)
INFO:Security:68a - user is Shrikant.Raman, on host LOFRU-PC-3.
ERROR:Security:7 - A feature for SysGen was found but is for the wrong hostid.
WARNING:Security:9b - No 'SysGen' feature version 2012.01 was available for part 'xc6vlx240t'.
ERROR:Security:12 - No 'xc6vlx240t' feature version 2012.01 was available (-5),
so 'SysGen_TDP' may not be used.

---------------------------------------------------------------------
Invalid host.
The hostid of this system does not match the hostid
specified in the license file.
Feature: SysGen
Hostid: 00fff0b79f04
License path: D:\Xilinx\13.4\ISE_DS\common\Xilinx.lic;C:/modeltech_6.4c/LICENSE.TXT;C:/.Xilinx\Xilinx.lic;D:/Xilinx/13.4/ISE_DS/ISE/data\*.lic;D:/Xilinx/13.4/ISE_DS/ISE/coregen/core_licenses\Xilinx.lic;D:/Xilinx/13.4/ISE_DS/ISE/coregen/core_licenses\XilinxFree.lic;D:/Xilinx/13.4/ISE_DS/EDK/data/core_licenses\Xilinx.lic;
FLEXnet Licensing error:-9,57. System Error: 2 ""
For further information, refer to the FLEXnet Licensing documentation,
available at "www.acresso.com".No such feature exists.
Feature: xc6vlx240t
License path: D:\Xilinx\13.4\ISE_DS\common\Xilinx.lic;C:/modeltech_6.4c/LICENSE.TXT;C:/.Xilinx\Xilinx.lic;D:/Xilinx/13.4/ISE_DS/ISE/data\*.lic;D:/Xilinx/13.4/ISE_DS/ISE/coregen/core_licenses\Xilinx.lic;D:/Xilinx/13.4/ISE_DS/ISE/coregen/core_licenses\XilinxFree.lic;D:/Xilinx/13.4/ISE_DS/EDK/data/core_licenses\Xilinx.lic;
FLEXnet Licensing error:-5,357
For further information, refer to the FLEXnet Licensing documentation,
available at "www.acresso.com".

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Plz Help ..

Thanks

[Kaustubha Govind]

Please contact Xilinx Support for this issue, since this is not a MathWorks product.