Xilinx webpack 6.1.03i error

I upgraded to webpack 6.1i from 4.2 and when I compile my design I get the following error.

Loading device for application Xst from file 'v100.nph' in environment C:/Xilinx. FATAL_ERROR:DeviceResourceModel:basnpdevice.c:620:1.23 - bad nph file Process will terminate. To resolve this error, please consult the Answers Database and other online resources at

If you need further assistance, please open a Webcase by clicking on the "WebCase" link at

I searched through answer database but did not find anything. Does anybody has any ideas ?

Sumit

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